View Single Invoice API

Introduction

Loads an existing individual or blank invoice for view/edit in the UI. Fetches InvoiceOriginal by invoiceNumber, reloads line items, merges customer details (with country/zone/state/city names), optional DO number for non-blank types, ensures a remarks line exists, recalculates row totals from qty × cost, and builds codeAndDescription from account code + category.

Source: GenerateInvoiceAPI.viewSingleInvoice.

See also: Generate Invoice — all endpoints.

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HTTP Endpoint

| URL | /rest/generateinvoice/viewSingleInvoice | | Method | POST |

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Request Body (JSON)

Field	Required	Description
userName	Yes	Auth.
authKey	Yes	Auth.
branch	Yes	Contract.
invoiceNumber	Yes	Key for getInvoiceOriginalForUpload.

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Authentication

401 invalid; 200 success.

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Success Response

{
  "data": "<InvoiceOriginal JSON string>"
}

Headers: Access-Control-Allow-Origin: *

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Example

{
  "userName": "alice",
  "authKey": "k",
  "branch": "default",
  "invoiceNumber": "INV-2026-100"
}