[Line items on sales invoices are appended and not replaced.]

When we do a put request on sales_invoices the sales invoice line items are apended instead of replaced.

https://developer.sage.com/api/accounting/guides/line_items/

 

Payload from put request

"{\"sales_invoice\":{\"contact_id\":\"17fd8726072541fbaebcd637162ac28f\",\"status_id\":\"DRAFT\",\"reference\":\"XXXX-June\",\"date\":\"2021-06-21\",\"tax_amount\":5,
\"invoice_lines\":[
{\"description\":\"1 June: Winit updated 2\",\"ledger_account_id\":\"70b1a238cd1b11eb8fb306aa8a4632ce\",\"unit_price\":71.4,\"quantity\":3.5,\"tax_amount\":14.28,\"tax_rate_id\":\"FR_STANDARD\"},
{\"description\":\"1 June: WinIt - Seb and Eugenie updated 2\",\"ledger_account_id\":\"70b1a238cd1b11eb8fb306aa8a4632ce\",\"unit_price\":71.4,\"quantity\":3.5,\"tax_amount\":14.28,\"tax_rate_id\":\"FR_STANDARD\"},
...."

 

 

As you can see, while our descriptions are all '1 June: Winit updated 2' In the invoicce we have:

1 June: Winit and 1 June: Winit updated 1 and 1 June: Winit updated 2

From the documentation:

Once you have an invoice or estimate posted and need to alter or correct something on a line item, it is possible to make a PUT request, and specify the desired result. This means that you cannot simply make a PUT request using just the lines you wish to change but need to specify everything that is correct also. It can be thought of as making a POST request for the first time correctly but using PUT.

 

This feels awfully like a bug, please let us know how to procead.