books/schemas/app/SalesInvoice.json

{
  "name": "SalesInvoice",
  "label": "Sales Invoice",
  "extends": "Invoice",
  "naming": "numberSeries",
  "showTitle": true,
  "fields": [
    {
      "fieldname": "numberSeries",
      "label": "Number Series",
      "fieldtype": "Link",
      "target": "NumberSeries",
      "create": true,
      "required": true,
      "default": "SINV-",
      "section": "Default"
    },
    {
      "fieldname": "items",
      "label": "Items",
      "fieldtype": "Table",
      "target": "SalesInvoiceItem",
      "required": true,
      "edit": true,
      "section": "Items"
    }
  ],
  "keywordFields": ["name", "party"]
}