Discussions

We are integrating with the Next Project API and currently using the /supplierinvoice/ endpoints to fetch supplier invoice data.

We've successfully retrieved invoice header data and accounting rows via /supplierinvoice/{id}/accounting/, but what we actually need are the original invoice line items — i.e., the individual product/service rows with descriptions, quantities, unit prices, VAT rates, etc.

Our questions:

1. Is there an API endpoint for retrieving supplier invoice line items/rows that we might have missed? We couldn't find one in the documentation.
2. If not available via API, is it possible to get read access to the relevant database table(s) containing invoice rows?
3. For digital/e-invoices (non-scanned), do you store the original structured invoice data (e.g., XML or similar)? If so, is there a way to access this data either via API or file export?

Our use case is to extract detailed invoice row information for cost analysis and project cost tracking purposes.

Thank you for your help.