Merge pull request #605 from akshayitzme/serial-no

feat: serial number

backend/database/bespoke.ts

@@ -138,7 +138,8 @@ export class BespokeQueries {
     location?: string,
     fromDate?: string,
     toDate?: string,
-    batch?: string
+    batch?: string,
+    serialNo?: string
   ): Promise<number | null> {
     const query = db.knex!(ModelNameEnum.StockLedgerEntry)
       .sum('quantity')
@@ -152,6 +153,10 @@ export class BespokeQueries {
       query.andWhere('batch', batch);
     }
 
+     if (serialNo) {
+      query.andWhere('serialNo', serialNo);
+    }
+
     if (fromDate) {
       query.andWhereRaw('datetime(date) > datetime(?)', [fromDate]);
     }

fyo/core/dbHandler.ts

@@ -313,7 +313,8 @@ export class DatabaseHandler extends DatabaseBase {
     location?: string,
     fromDate?: string,
     toDate?: string,
-    batch?: string
+    batch?: string,
+    serialNo?: string
   ): Promise<number | null> {
     return (await this.#demux.callBespoke(
       'getStockQuantity',
@@ -321,7 +322,8 @@ export class DatabaseHandler extends DatabaseBase {
       location,
       fromDate,
       toDate,
-      batch
+      batch,
+      serialNo
     )) as number | null;
   }
 

models/baseModels/Item/Item.ts

@@ -19,6 +19,7 @@ export class Item extends Doc {
   itemType?: 'Product' | 'Service';
   for?: 'Purchases' | 'Sales' | 'Both';
   hasBatch?: boolean;
+  hasSerialNo?: boolean;
 
   formulas: FormulaMap = {
     incomeAccount: {
@@ -124,6 +125,8 @@ export class Item extends Doc {
     barcode: () => !this.fyo.singles.InventorySettings?.enableBarcodes,
     hasBatch: () =>
       !(this.fyo.singles.InventorySettings?.enableBatches && this.trackItem),
+    hasSerialNo: () =>
+      !(this.fyo.singles.InventorySettings?.enableSerialNo && this.trackItem),
     uomConversions: () =>
       !this.fyo.singles.InventorySettings?.enableUomConversions,
   };
@@ -133,5 +136,6 @@ export class Item extends Doc {
     itemType: () => this.inserted,
     trackItem: () => this.inserted,
     hasBatch: () => this.inserted,
+    hasSerialNo: () => this.inserted,
   };
 }

models/helpers.ts

@@ -16,7 +16,7 @@ import {
 import { Invoice } from './baseModels/Invoice/Invoice';
 import { StockMovement } from './inventory/StockMovement';
 import { StockTransfer } from './inventory/StockTransfer';
-import { InvoiceStatus, ModelNameEnum } from './types';
+import { InvoiceStatus, SerialNoStatus, ModelNameEnum } from './types';
 
 export function getInvoiceActions(
   fyo: Fyo,
@@ -248,6 +248,45 @@ export function getInvoiceStatus(doc: RenderData | Doc): InvoiceStatus {
   return 'Saved';
 }
 
+export function getSerialNoStatusColumn(): ColumnConfig {
+  return {
+    label: t`Status`,
+    fieldname: 'status',
+    fieldtype: 'Select',
+    render(doc) {
+      const status = doc.status as SerialNoStatus;
+      const color = serialNoStatusColor[status];
+      const label = getSerialNoStatusText(status as string);
+
+      return {
+        template: `<Badge class="text-xs" color="${color}">${label}</Badge>`,
+      };
+    },
+  };
+}
+
+export const serialNoStatusColor: Record<SerialNoStatus, string | undefined> = {
+  Inactive: 'gray',
+  Active: 'green',
+  Delivered: 'green',
+  Expired: 'red',
+};
+
+export function getSerialNoStatusText(status: string): string {
+  switch (status) {
+    case 'Inactive':
+      return t`Inactive`;
+    case 'Active':
+      return t`Active`;
+    case 'Delivered':
+      return t`Delivered`;
+    case 'Expired':
+      return t`Expired`;
+    default:
+      return t`Inactive`;
+  }
+}
+
 export async function getExchangeRate({
   fromCurrency,
   toCurrency,

models/index.ts

@@ -19,6 +19,7 @@ import { SetupWizard } from './baseModels/SetupWizard/SetupWizard';
 import { Tax } from './baseModels/Tax/Tax';
 import { TaxSummary } from './baseModels/TaxSummary/TaxSummary';
 import { Batch } from './inventory/Batch';
+import { SerialNo } from './inventory/SerialNo';
 import { InventorySettings } from './inventory/InventorySettings';
 import { Location } from './inventory/Location';
 import { PurchaseReceipt } from './inventory/PurchaseReceipt';
@@ -48,6 +49,7 @@ export const models = {
   PurchaseInvoiceItem,
   SalesInvoice,
   SalesInvoiceItem,
+  SerialNo,
   SetupWizard,
   PrintTemplate,
   Tax,

models/inventory/InventorySettings.ts

@@ -11,6 +11,7 @@ export class InventorySettings extends Doc {
   costOfGoodsSold?: string;
   enableBarcodes?: boolean;
   enableBatches?: boolean;
+  enableSerialNo?: boolean;
   enableUomConversions?: boolean;
 
   static filters: FiltersMap = {
@@ -35,6 +36,9 @@ export class InventorySettings extends Doc {
     enableBatches: () => {
       return !!this.enableBatches;
     },
+    enableSerialNo: () => {
+      return !!this.enableSerialNo;
+    },
     enableUomConversions: () => {
       return !!this.enableUomConversions;
     },

models/inventory/PurchaseReceipt.ts

@@ -1,11 +1,17 @@
 import { ListViewSettings } from 'fyo/model/types';
 import { getTransactionStatusColumn } from 'models/helpers';
+import { updateSerialNoStatus } from './helpers';
 import { PurchaseReceiptItem } from './PurchaseReceiptItem';
 import { StockTransfer } from './StockTransfer';
 
 export class PurchaseReceipt extends StockTransfer {
   items?: PurchaseReceiptItem[];
 
+  async afterSubmit(): Promise<void> {
+    await super.afterSubmit();
+    await updateSerialNoStatus(this, this.items!, 'Active');
+  }
+  
   static getListViewSettings(): ListViewSettings {
     return {
       columns: [

models/inventory/SerialNo.ts

@@ -0,0 +1,17 @@
+import { Doc } from 'fyo/model/doc';
+import { ListViewSettings } from 'fyo/model/types';
+import { getSerialNoStatusColumn } from 'models/helpers';
+
+export class SerialNo extends Doc {
+  static getListViewSettings(): ListViewSettings {
+    return {
+      columns: [
+        'name',
+        getSerialNoStatusColumn(),
+        'item',
+        'description',
+        'party',
+      ],
+    };
+  }
+}

models/inventory/Shipment.ts

@@ -1,11 +1,22 @@
 import { ListViewSettings } from 'fyo/model/types';
 import { getTransactionStatusColumn } from 'models/helpers';
+import { updateSerialNoStatus } from './helpers';
 import { ShipmentItem } from './ShipmentItem';
 import { StockTransfer } from './StockTransfer';
 
 export class Shipment extends StockTransfer {
   items?: ShipmentItem[];
 
+  async afterSubmit(): Promise<void> {
+    await super.afterSubmit();
+    await updateSerialNoStatus(this, this.items!, 'Delivered');
+  }
+
+  async afterCancel(): Promise<void> {
+    await super.afterCancel();
+    await updateSerialNoStatus(this, this.items!, 'Active');
+  }
+
   static getListViewSettings(): ListViewSettings {
     return {
       columns: [

models/inventory/StockLedgerEntry.ts

@@ -11,6 +11,7 @@ export class StockLedgerEntry extends Doc {
   referenceName?: string;
   referenceType?: string;
   batch?: string;
+  serialNo?: string;
 
   static override getListViewSettings(): ListViewSettings {
     return {

models/inventory/StockManager.ts

@@ -4,6 +4,7 @@ import { ModelNameEnum } from 'models/types';
 import { Money } from 'pesa';
 import { StockLedgerEntry } from './StockLedgerEntry';
 import { SMDetails, SMIDetails, SMTransferDetails } from './types';
+import { getSerialNumbers } from './helpers';
 
 export class StockManager {
   /**
@@ -133,15 +134,33 @@ export class StockManager {
     const date = details.date.toISOString();
     const formattedDate = this.fyo.format(details.date, 'Datetime');
     const batch = details.batch || undefined;
+    const serialNo = details.serialNo || undefined;
+    let quantityBefore = 0;
 
-    let quantityBefore =
+    if (serialNo) {
+      const serialNos = getSerialNumbers(serialNo);
+      for (const serialNo of serialNos) {
+        quantityBefore +=
           (await this.fyo.db.getStockQuantity(
             details.item,
             details.fromLocation,
             undefined,
             date,
-        batch
+            batch,
+            serialNo
           )) ?? 0;
+      }
+    } else {
+      quantityBefore =
+        (await this.fyo.db.getStockQuantity(
+          details.item,
+          details.fromLocation,
+          undefined,
+          date,
+          batch,
+          serialNo
+        )) ?? 0;
+    }
 
     if (this.isCancelled) {
       quantityBefore += details.quantity;
@@ -167,7 +186,8 @@ export class StockManager {
       details.fromLocation,
       details.date.toISOString(),
       undefined,
-      batch
+      batch,
+      serialNo
     );
 
     if (quantityAfter === null) {
@@ -211,6 +231,7 @@ class StockManagerItem {
   fromLocation?: string;
   toLocation?: string;
   batch?: string;
+  serialNo?: string;
 
   stockLedgerEntries?: StockLedgerEntry[];
 
@@ -226,6 +247,7 @@ class StockManagerItem {
     this.referenceName = details.referenceName;
     this.referenceType = details.referenceType;
     this.batch = details.batch;
+    this.serialNo = details.serialNo;
 
     this.fyo = fyo;
   }
@@ -260,10 +282,30 @@ class StockManagerItem {
 
   #moveStockForSingleLocation(location: string, isOutward: boolean) {
     let quantity = this.quantity!;
+    const serialNo = this.serialNo;
     if (quantity === 0) {
       return;
     }
 
+    if (serialNo) {
+      const serialNos = getSerialNumbers(serialNo!);
+      if (isOutward) {
+        quantity = -1;
+      } else {
+        quantity = 1;
+      }
+
+      for (const serialNo of serialNos) {
+        const stockLedgerEntry = this.#getStockLedgerEntry(
+          location,
+          quantity,
+          serialNo!
+        );
+        this.stockLedgerEntries?.push(stockLedgerEntry);
+      }
+      return;
+    }
+
     if (isOutward) {
       quantity = -quantity;
     }
@@ -273,12 +315,13 @@ class StockManagerItem {
     this.stockLedgerEntries?.push(stockLedgerEntry);
   }
 
-  #getStockLedgerEntry(location: string, quantity: number) {
+  #getStockLedgerEntry(location: string, quantity: number, serialNo?: string) {
     return this.fyo.doc.getNewDoc(ModelNameEnum.StockLedgerEntry, {
       date: this.date,
       item: this.item,
       rate: this.rate,
       batch: this.batch || null,
+      serialNo: serialNo || null,
       quantity,
       location,
       referenceName: this.referenceName,

models/inventory/StockMovement.ts

@@ -15,7 +15,12 @@ import {
 import { LedgerPosting } from 'models/Transactional/LedgerPosting';
 import { ModelNameEnum } from 'models/types';
 import { Money } from 'pesa';
-import { validateBatch } from './helpers';
+import {
+  getSerialNumbers,
+  updateSerialNoStatus,
+  validateBatch,
+  validateSerialNo,
+} from './helpers';
 import { StockMovementItem } from './StockMovementItem';
 import { Transfer } from './Transfer';
 import { MovementType } from './types';
@@ -52,6 +57,7 @@ export class StockMovement extends Transfer {
     await super.validate();
     this.validateManufacture();
     await validateBatch(this);
+    await validateSerialNo(this);
   }
 
   validateManufacture() {
@@ -71,6 +77,16 @@ export class StockMovement extends Transfer {
     }
   }
 
+  async afterSubmit(): Promise<void> {
+    await super.afterSubmit();
+    await updateSerialNoStatus(this, this.items!, 'Active');
+  }
+
+  async afterCancel(): Promise<void> {
+    await super.afterCancel();
+    await updateSerialNoStatus(this, this.items!, 'Inactive');
+  }
+
   static filters: FiltersMap = {
     numberSeries: () => ({ referenceType: ModelNameEnum.StockMovement }),
   };
@@ -110,6 +126,7 @@ export class StockMovement extends Transfer {
       rate: row.rate!,
       quantity: row.quantity!,
       batch: row.batch!,
+      serialNo: row.serialNo!,
       fromLocation: row.fromLocation,
       toLocation: row.toLocation,
     }));

models/inventory/StockMovementItem.ts

@@ -32,6 +32,7 @@ export class StockMovementItem extends Doc {
   amount?: Money;
   parentdoc?: StockMovement;
   batch?: string;
+  serialNo?: string;
 
   get isIssue() {
     return this.parentdoc?.movementType === MovementType.MaterialIssue;
@@ -236,6 +237,7 @@ export class StockMovementItem extends Doc {
 
   override hidden: HiddenMap = {
     batch: () => !this.fyo.singles.InventorySettings?.enableBatches,
+    serialNo: () => !this.fyo.singles.InventorySettings?.enableSerialNo,
     transferUnit: () =>
       !this.fyo.singles.InventorySettings?.enableUomConversions,
     transferQuantity: () =>

models/inventory/StockTransfer.ts

@@ -17,7 +17,7 @@ import { LedgerPosting } from 'models/Transactional/LedgerPosting';
 import { ModelNameEnum } from 'models/types';
 import { Money } from 'pesa';
 import { TargetField } from 'schemas/types';
-import { validateBatch } from './helpers';
+import { validateBatch, validateSerialNo } from './helpers';
 import { StockTransferItem } from './StockTransferItem';
 import { Transfer } from './Transfer';
 
@@ -91,6 +91,7 @@ export abstract class StockTransfer extends Transfer {
         rate: row.rate!,
         quantity: row.quantity!,
         batch: row.batch!,
+        serialNo: row.serialNo!,
         fromLocation,
         toLocation,
       };
@@ -162,6 +163,7 @@ export abstract class StockTransfer extends Transfer {
   override async validate(): Promise<void> {
     await super.validate();
     await validateBatch(this);
+    await validateSerialNo(this);
   }
 
   static getActions(fyo: Fyo): Action[] {

models/inventory/StockTransferItem.ts

@@ -28,6 +28,7 @@ export class StockTransferItem extends Doc {
   description?: string;
   hsnCode?: number;
   batch?: string;
+  serialNo?: string;
 
   parentdoc?: StockTransfer;
 
@@ -215,6 +216,7 @@ export class StockTransferItem extends Doc {
 
   override hidden: HiddenMap = {
     batch: () => !this.fyo.singles.InventorySettings?.enableBatches,
+    serialNo: () => !this.fyo.singles.InventorySettings?.enableSerialNo,
     transferUnit: () =>
       !this.fyo.singles.InventorySettings?.enableUomConversions,
     transferQuantity: () =>

models/inventory/helpers.ts

@@ -1,7 +1,11 @@
+import { t } from 'fyo';
+import { Doc } from 'fyo/model/doc';
+import { DocValueMap } from 'fyo/core/types';
 import { ValidationError } from 'fyo/utils/errors';
 import { Invoice } from 'models/baseModels/Invoice/Invoice';
 import { InvoiceItem } from 'models/baseModels/InvoiceItem/InvoiceItem';
 import { ModelNameEnum } from 'models/types';
+import { ShipmentItem } from './ShipmentItem';
 import { StockMovement } from './StockMovement';
 import { StockMovementItem } from './StockMovementItem';
 import { StockTransfer } from './StockTransfer';
@@ -25,11 +29,7 @@ async function validateItemRowBatch(
     return;
   }
 
-  const hasBatch = await doc.fyo.getValue(
+  const hasBatch = await doc.fyo.getValue(ModelNameEnum.Item, item, 'hasBatch');
-    ModelNameEnum.Item,
-    item,
-    'hasBatch'
-  );
 
   if (!hasBatch && batch) {
     throw new ValidationError(
@@ -49,3 +49,211 @@ async function validateItemRowBatch(
     );
   }
 }
+
+export async function validateSerialNo(
+  doc: StockMovement | StockTransfer | Invoice
+) {
+  for (const row of doc.items ?? []) {
+    await validateItemRowSerialNo(row, doc.movementType as string);
+  }
+}
+
+async function validateItemRowSerialNo(
+  doc: StockMovementItem | StockTransferItem | InvoiceItem,
+  movementType: string
+) {
+  const idx = doc.idx ?? 0 + 1;
+  const item = doc.item;
+
+  if (!item) {
+    return;
+  }
+
+  if (doc.parentdoc?.cancelled) {
+    return;
+  }
+
+  const hasSerialNo = await doc.fyo.getValue(
+    ModelNameEnum.Item,
+    item,
+    'hasSerialNo'
+  );
+
+  if (hasSerialNo && !doc.serialNo) {
+    throw new ValidationError(
+      [
+        doc.fyo.t`Serial No not set for row ${idx}.`,
+        doc.fyo.t`Serial No is enabled for Item ${item}`,
+      ].join(' ')
+    );
+  }
+
+  if (!hasSerialNo && doc.serialNo) {
+    throw new ValidationError(
+      [
+        doc.fyo.t`Serial No set for row ${idx}.`,
+        doc.fyo.t`Serial No is not enabled for Item ${item}`,
+      ].join(' ')
+    );
+  }
+
+  if (!hasSerialNo) return;
+
+  const serialNos = getSerialNumbers(doc.serialNo as string);
+
+  if (serialNos.length !== doc.quantity) {
+    throw new ValidationError(
+      t`${doc.quantity!} Serial Numbers required for ${doc.item!}. You have provided ${
+        serialNos.length
+      }.`
+    );
+  }
+
+  for (const serialNo of serialNos) {
+    const { name, status, item } = await doc.fyo.db.get(
+      ModelNameEnum.SerialNo,
+      serialNo,
+      ['name', 'status', 'item']
+    );
+
+    if (movementType == 'MaterialIssue') {
+      await validateSNMaterialIssue(
+        doc,
+        name as string,
+        item as string,
+        serialNo,
+        status as string
+      );
+    }
+
+    if (movementType == 'MaterialReceipt') {
+      await validateSNMaterialReceipt(
+        doc,
+        name as string,
+        serialNo,
+        status as string
+      );
+    }
+
+    if (movementType === 'Shipment') {
+      await validateSNShipment(doc, serialNo);
+    }
+
+    if (doc.parentSchemaName === 'PurchaseReceipt') {
+      await validateSNPurchaseReceipt(
+        doc,
+        name as string,
+        serialNo,
+        status as string
+      );
+    }
+  }
+}
+
+export const getSerialNumbers = (serialNo: string): string[] => {
+  return serialNo ? serialNo.split('\n') : [];
+};
+
+export const updateSerialNoStatus = async (
+  doc: Doc,
+  items: StockMovementItem[] | ShipmentItem[],
+  newStatus: string
+) => {
+  for (const item of items) {
+    const serialNos = getSerialNumbers(item.serialNo!);
+    if (!serialNos.length) break;
+
+    for (const serialNo of serialNos) {
+      await doc.fyo.db.update(ModelNameEnum.SerialNo, {
+        name: serialNo,
+        status: newStatus,
+      });
+    }
+  }
+};
+
+
+const validateSNMaterialReceipt = async (
+  doc: Doc,
+  name: string,
+  serialNo: string,
+  status: string
+) => {
+  if (name === undefined) {
+    const values = {
+      name: serialNo,
+      item: doc.item,
+      party: doc.parentdoc?.party as string,
+    };
+    (
+      await doc.fyo.doc
+        .getNewDoc(ModelNameEnum.SerialNo, values as DocValueMap)
+        .sync()
+    ).submit();
+  }
+
+  if (status && status !== 'Inactive') {
+    throw new ValidationError(t`SerialNo ${serialNo} status is not Inactive`);
+  }
+};
+
+const validateSNPurchaseReceipt = async (
+  doc: Doc,
+  name: string,
+  serialNo: string,
+  status: string
+) => {
+  if (name === undefined) {
+    const values = {
+      name: serialNo,
+      item: doc.item,
+      party: doc.parentdoc?.party as string,
+      status: 'Inactive',
+    };
+    (
+      await doc.fyo.doc
+        .getNewDoc(ModelNameEnum.SerialNo, values as DocValueMap)
+        .sync()
+    ).submit();
+  }
+
+  if (status && status !== 'Inactive') {
+    throw new ValidationError(t`SerialNo ${serialNo} status is not Inactive`);
+  }
+};
+
+const validateSNMaterialIssue = async (
+  doc: Doc,
+  name: string,
+  item: string,
+  serialNo: string,
+  status: string
+) => {
+  if (doc.isCancelled) return;
+
+  if (!name)
+    throw new ValidationError(t`Serial Number ${serialNo} does not exist.`);
+
+  if (status !== 'Active')
+    throw new ValidationError(
+      t`Serial Number ${serialNo} status is not Active`
+    );
+  if (doc.item !== item) {
+    throw new ValidationError(
+      t`Serial Number ${serialNo} does not belong to the item ${
+        doc.item! as string
+      }`
+    );
+  }
+};
+
+const validateSNShipment = async (doc: Doc, serialNo: string) => {
+  const { status } = await doc.fyo.db.get(
+    ModelNameEnum.SerialNo,
+    serialNo,
+    'status'
+  );
+
+  if (status !== 'Active')
+    throw new ValidationError(t`Serial No ${serialNo} status is not Active`);
+};

models/inventory/tests/helpers.ts

@@ -28,6 +28,7 @@ type Transfer = {
   from?: string;
   to?: string;
   batch?: string;
+  serialNo?: string;
   quantity: number;
   rate: number;
 };
@@ -36,8 +37,8 @@ interface TransferTwo extends Omit<Transfer, 'from' | 'to'> {
   location: string;
 }
 
-export function getItem(name: string, rate: number, hasBatch: boolean = false) {
+export function getItem(name: string, rate: number, hasBatch: boolean = false, hasSerialNo: boolean = false) {
-  return { name, rate, trackItem: true, hasBatch };
+  return { name, rate, trackItem: true, hasBatch, hasSerialNo };
 }
 
 export async function getBatch(
@@ -84,6 +85,7 @@ export async function getStockMovement(
     from: fromLocation,
     to: toLocation,
     batch,
+    serialNo,
     quantity,
     rate,
   } of transfers) {
@@ -92,6 +94,7 @@ export async function getStockMovement(
       fromLocation,
       toLocation,
       batch,
+      serialNo,
       rate,
       quantity,
     });

models/inventory/tests/testSerialNos.spec.ts

@@ -0,0 +1,312 @@
+import { assertThrows } from 'backend/database/tests/helpers';
+import { ModelNameEnum } from 'models/types';
+import test from 'tape';
+import { closeTestFyo, getTestFyo, setupTestFyo } from 'tests/helpers';
+import { MovementType } from '../types';
+import { getItem, getStockMovement } from './helpers';
+
+const fyo = getTestFyo();
+
+setupTestFyo(fyo, __filename);
+
+const itemMap = {
+  Pen: {
+    name: 'Pen',
+    rate: 700,
+  },
+  Ink: {
+    name: 'Ink',
+    rate: 50,
+  },
+};
+
+const locationMap = {
+  LocationOne: 'LocationOne',
+  LocationTwo: 'LocationTwo',
+};
+
+const partyMap = {
+  partyOne: { name: 'Someone', Role: 'Both' },
+};
+
+const serialNoMap = {
+  serialOne: {
+    name: 'PN-AB001',
+    item: itemMap.Pen.name,
+  },
+  serialTwo: {
+    name: 'PN-AB002',
+    item: itemMap.Pen.name,
+  },
+  serialThree: {
+    name: 'PN-AB003',
+    item: itemMap.Pen.name,
+  },
+};
+
+test('create dummy items, locations, party & serialNos', async (t) => {
+  // Create Items
+  for (const { name, rate } of Object.values(itemMap)) {
+    const item = getItem(name, rate, false, true);
+    await fyo.doc.getNewDoc(ModelNameEnum.Item, item).sync();
+  }
+
+  // Create Locations
+  for (const name of Object.values(locationMap)) {
+    await fyo.doc.getNewDoc(ModelNameEnum.Location, { name }).sync();
+  }
+
+  // Create Party
+  await fyo.doc.getNewDoc(ModelNameEnum.Party, partyMap.partyOne).sync();
+
+  t.ok(
+    await fyo.db.exists(ModelNameEnum.Party, partyMap.partyOne.name),
+    'party created'
+  );
+
+  // Create SerialNos
+  for (const serialNo of Object.values(serialNoMap)) {
+    const doc = fyo.doc.getNewDoc(ModelNameEnum.SerialNo, serialNo);
+    await doc.sync();
+
+    const status = await fyo.getValue(
+      ModelNameEnum.SerialNo,
+      serialNo.name,
+      'status'
+    );
+    t.equal(
+      status,
+      'Inactive',
+      `${serialNo.name} exists and inital status Inactive`
+    );
+  }
+});
+
+test('serialNo enabled item, create stock movement, material receipt', async (t) => {
+  const { rate } = itemMap.Pen;
+  const serialNo =
+    serialNoMap.serialOne.name + '\n' + serialNoMap.serialTwo.name;
+  const stockMovement = await getStockMovement(
+    MovementType.MaterialReceipt,
+    new Date('2022-11-03T09:57:04.528'),
+    [
+      {
+        item: itemMap.Pen.name,
+        to: locationMap.LocationOne,
+        quantity: 2,
+        serialNo,
+        rate,
+      },
+    ],
+    fyo
+  );
+
+  await (await stockMovement.sync()).submit();
+
+  t.equal(
+    await fyo.db.getStockQuantity(
+      itemMap.Pen.name,
+      locationMap.LocationOne,
+      undefined,
+      undefined,
+      undefined,
+      serialNoMap.serialOne.name
+    ),
+    1,
+    'serialNo one has quantity one'
+  );
+
+  t.equal(
+    await fyo.db.getStockQuantity(
+      itemMap.Pen.name,
+      locationMap.LocationOne,
+      undefined,
+      undefined,
+      undefined,
+      serialNoMap.serialTwo.name
+    ),
+    1,
+    'serialNo two has quantity one'
+  );
+
+  t.equal(
+    await fyo.db.getStockQuantity(
+      itemMap.Pen.name,
+      locationMap.LocationOne,
+      undefined,
+      undefined,
+      undefined,
+      serialNoMap.serialThree.name
+    ),
+    null,
+    'serialNo three has no quantity'
+  );
+
+  t.equal(
+    await fyo.db.getStockQuantity(
+      itemMap.Ink.name,
+      locationMap.LocationOne,
+      undefined,
+      undefined,
+      undefined,
+      serialNoMap.serialOne.name
+    ),
+    null,
+    'non transacted item has no quantity'
+  );
+});
+
+test('serialNo enabled item, create stock movement, material issue', async (t) => {
+  const { rate } = itemMap.Pen;
+  const quantity = 1;
+
+  const stockMovement = await getStockMovement(
+    MovementType.MaterialIssue,
+    new Date('2022-11-03T10:00:00.528'),
+    [
+      {
+        item: itemMap.Pen.name,
+        from: locationMap.LocationOne,
+        serialNo: serialNoMap.serialOne.name,
+        quantity,
+        rate,
+      },
+    ],
+    fyo
+  );
+
+  await (await stockMovement.sync()).submit();
+  t.equal(
+    await fyo.db.getStockQuantity(
+      itemMap.Pen.name,
+      locationMap.LocationOne,
+      undefined,
+      undefined,
+      undefined,
+      serialNoMap.serialOne.name
+    ),
+    0,
+    'serialNo one quantity transacted out'
+  );
+
+  t.equal(
+    await fyo.db.getStockQuantity(
+      itemMap.Pen.name,
+      locationMap.LocationOne,
+      undefined,
+      undefined,
+      undefined,
+      serialNoMap.serialTwo.name
+    ),
+    1,
+    'serialNo two quantity intact'
+  );
+});
+
+test('serialNo enabled item, create stock movement, material transfer', async (t) => {
+  const { rate } = itemMap.Pen;
+  const quantity = 1;
+  const serialNo = serialNoMap.serialTwo.name;
+
+  const stockMovement = await getStockMovement(
+    MovementType.MaterialTransfer,
+    new Date('2022-11-03T09:58:04.528'),
+    [
+      {
+        item: itemMap.Pen.name,
+        from: locationMap.LocationOne,
+        to: locationMap.LocationTwo,
+        serialNo,
+        quantity,
+        rate,
+      },
+    ],
+    fyo
+  );
+
+  await (await stockMovement.sync()).submit();
+  t.equal(
+    await fyo.db.getStockQuantity(
+      itemMap.Pen.name,
+      locationMap.LocationOne,
+      undefined,
+      undefined,
+      undefined,
+      serialNo
+    ),
+    0,
+    'location one serialNoTwo transacted out'
+  );
+
+  t.equal(
+    await fyo.db.getStockQuantity(
+      itemMap.Pen.name,
+      locationMap.LocationTwo,
+      undefined,
+      undefined,
+      undefined,
+      serialNo
+    ),
+    quantity,
+    'location two serialNo transacted in'
+  );
+});
+
+test('serialNo enabled item, create invalid stock movements', async (t) => {
+  const { name, rate } = itemMap.Pen;
+  const quantity = await fyo.db.getStockQuantity(
+    itemMap.Pen.name,
+    locationMap.LocationTwo,
+    undefined,
+    undefined,
+    undefined,
+    serialNoMap.serialTwo.name
+  );
+
+  t.equal(quantity, 1, 'location two, serialNo one has quantity');
+  if (!quantity) {
+    return;
+  }
+
+  let stockMovement = await getStockMovement(
+    MovementType.MaterialIssue,
+    new Date('2022-11-03T09:59:04.528'),
+    [
+      {
+        item: itemMap.Pen.name,
+        from: locationMap.LocationTwo,
+        serialNo: serialNoMap.serialOne.name,
+        quantity,
+        rate,
+      },
+    ],
+    fyo
+  );
+
+  await assertThrows(
+    async () => (await stockMovement.sync()).submit(),
+    'invalid stockMovement with insufficient quantity did not throw'
+  );
+
+  stockMovement = await getStockMovement(
+    MovementType.MaterialIssue,
+    new Date('2022-11-03T09:59:04.528'),
+    [
+      {
+        item: itemMap.Pen.name,
+        from: locationMap.LocationTwo,
+        quantity,
+        rate,
+      },
+    ],
+    fyo
+  );
+
+  await assertThrows(
+    async () => (await stockMovement.sync()).submit(),
+    'invalid stockMovement without serialNo did not throw'
+  );
+  t.equal(await fyo.db.getStockQuantity(name), 1, 'item still has quantity');
+});
+
+closeTestFyo(fyo, __filename);

models/inventory/types.ts

@@ -23,6 +23,7 @@ export interface SMTransferDetails {
   rate: Money;
   quantity: number;
   batch?: string;
+  serialNo?: string;
   fromLocation?: string;
   toLocation?: string;
 }

models/types.ts

@@ -1,4 +1,5 @@
 export type InvoiceStatus = 'Draft' | 'Saved' | 'Unpaid' | 'Cancelled' | 'Paid';
+export type SerialNoStatus = 'Inactive' | 'Active' | 'Delivered' | 'Expired';
 export enum ModelNameEnum {
   Account = 'Account',
   AccountingLedgerEntry = 'AccountingLedgerEntry',
@@ -25,6 +26,7 @@ export enum ModelNameEnum {
   PurchaseInvoiceItem = 'PurchaseInvoiceItem',
   SalesInvoice = 'SalesInvoice',
   SalesInvoiceItem = 'SalesInvoiceItem',
+  SerialNo = 'SerialNo',
   SetupWizard = 'SetupWizard',
   Tax = 'Tax',
   TaxDetail = 'TaxDetail',

reports/inventory/StockLedger.ts

@@ -28,6 +28,7 @@ export class StockLedger extends Report {
   item?: string;
   location?: string;
   batch?: string;
+  serialNo?: string;
   fromDate?: string;
   toDate?: string;
   ascending?: boolean;
@@ -41,6 +42,11 @@ export class StockLedger extends Report {
       .enableBatches;
   }
 
+  get hasSerialNos(): boolean {
+    return !!(this.fyo.singles.InventorySettings as InventorySettings)
+      .enableSerialNo;
+  }
+
   constructor(fyo: Fyo) {
     super(fyo);
     this._setObservers();
@@ -276,6 +282,11 @@ export class StockLedger extends Report {
             { fieldname: 'batch', label: 'Batch', fieldtype: 'Link' },
           ] as ColumnField[])
         : []),
+      ...(this.hasSerialNos
+        ? ([
+            { fieldname: 'serialNo', label: 'Serial No', fieldtype: 'Data' },
+          ] as ColumnField[])
+        : []),
       {
         fieldname: 'quantity',
         label: 'Quantity',

reports/inventory/helpers.ts

@@ -19,6 +19,7 @@ export async function getRawStockLedgerEntries(fyo: Fyo) {
     'date',
     'item',
     'batch',
+    'serialNo',
     'rate',
     'quantity',
     'location',
@@ -49,6 +50,7 @@ export function getStockLedgerEntries(
     const rate = safeParseFloat(sle.rate);
     const { item, location, quantity, referenceName, referenceType } = sle;
     const batch = sle.batch ?? '';
+    const serialNo = sle.serialNo ?? '';
 
     if (quantity === 0) {
       continue;
@@ -88,6 +90,7 @@ export function getStockLedgerEntries(
       item,
       location,
       batch,
+      serialNo,
 
       quantity,
       balanceQuantity,

reports/inventory/types.ts

@@ -6,6 +6,7 @@ export interface RawStockLedgerEntry {
   item: string;
   rate: string;
   batch: string | null;
+  serialNo: string | null;
   quantity: number;
   location: string;
   referenceName: string;
@@ -21,6 +22,7 @@ export interface ComputedStockLedgerEntry{
   item: string;
   location:string;
   batch: string;
+  serialNo: string;
 
   quantity: number;
   balanceQuantity: number;

schemas/app/Item.json

@@ -138,6 +138,13 @@
       "default": false,
       "section": "Inventory"
     },
+    {
+      "fieldname": "hasSerialNo",
+      "label": "Has Serial No",
+      "fieldtype": "Check",
+      "default": false,
+      "section": "Inventory"
+    },
     {
       "fieldname": "uomConversions",
       "label": "UOM Conversions",

schemas/app/inventory/InventorySettings.json

@@ -63,6 +63,12 @@
       "fieldtype": "Check",
       "section": "Features"
     },
+    {
+      "fieldname": "enableSerialNo",
+      "label": "Enable Serial No",
+      "fieldtype": "Check",
+      "section": "Features"
+    },
     {
       "fieldname": "enableUomConversions",
       "label": "Enable UOM Conversion",

schemas/app/inventory/SerialNo.json

@@ -0,0 +1,36 @@
+{
+  "name": "SerialNo",
+  "label": "Serial No",
+  "naming": "manual",
+  "fields": [
+    {
+      "fieldname": "name",
+      "fieldtype": "Data",
+      "label": "Serial Number",
+      "create": true,
+      "required": true
+    },
+    {
+      "fieldname": "item",
+      "fieldtype": "Link",
+      "label": "Item",
+      "target": "Item",
+      "create": true,
+      "required": true
+    },
+    {
+      "fieldname": "description",
+      "label": "Description",
+      "placeholder": "Serial Number Description",
+      "fieldtype": "Text"
+    },
+    {
+      "fieldname": "status",
+      "label": "Status",
+      "fieldtype": "Data",
+      "default": "Inactive"
+    }
+  ],
+  "quickEditFields": ["item", "description", "party"],
+  "keywordFields": ["name"]
+}

schemas/app/inventory/StockLedgerEntry.json

@@ -37,6 +37,14 @@
       "readOnly": true,
       "section": "Details"
     },
+    {
+      "fieldname": "serialNo",
+      "label": "Serial No",
+      "fieldtype": "Link",
+      "target": "SerialNo",
+      "readOnly": true,
+      "section": "Details"
+    },
     {
       "fieldname": "item",
       "label": "Item",

schemas/app/inventory/StockMovementItem.json

@@ -57,6 +57,11 @@
       "target": "Batch",
       "create": true
     },
+    {
+      "fieldname": "serialNo",
+      "label": "Serial No",
+      "fieldtype": "Text"
+    },
     {
       "fieldname": "quantity",
       "label": "Quantity",
@@ -94,6 +99,7 @@
     "transferQuantity",
     "transferUnit",
     "batch",
+    "serialNo",
     "quantity",
     "unit",
     "unitConversionFactor",

schemas/app/inventory/StockTransferItem.json

@@ -47,6 +47,11 @@
       "fieldtype": "Link",
       "target": "Batch"
     },
+    {
+      "fieldname": "serialNo",
+      "label": "Serial No",
+      "fieldtype": "Text"
+    },
     {
       "fieldname": "quantity",
       "label": "Quantity",
@@ -93,6 +98,7 @@
     "transferQuantity",
     "transferUnit",
     "batch",
+    "serialNo",
     "quantity",
     "unit",
     "unitConversionFactor",

schemas/schemas.ts

@@ -11,6 +11,7 @@ import InventorySettings from './app/inventory/InventorySettings.json';
 import Location from './app/inventory/Location.json';
 import PurchaseReceipt from './app/inventory/PurchaseReceipt.json';
 import PurchaseReceiptItem from './app/inventory/PurchaseReceiptItem.json';
+import SerialNo from './app/inventory/SerialNo.json';
 import Shipment from './app/inventory/Shipment.json';
 import ShipmentItem from './app/inventory/ShipmentItem.json';
 import StockLedgerEntry from './app/inventory/StockLedgerEntry.json';
@@ -117,4 +118,5 @@ export const appSchemas: Schema[] | SchemaStub[] = [
   PurchaseReceiptItem as Schema,
 
   Batch as Schema,
+  SerialNo as Schema,
 ];

src/utils/sidebarConfig.ts

@@ -96,6 +96,13 @@ async function getInventorySidebar(): Promise<SidebarRoot[]> {
           name: 'stock-balance',
           route: '/report/StockBalance',
         },
+        {
+          label: t`Serial No`,
+          name: 'serial-no',
+          route: `/list/SerialNo`,
+          schemaName: 'SerialNo',
+          hidden: () => !fyo.singles.InventorySettings?.enableSerialNo as boolean,
+        },
       ],
     },
   ];