This endpoint creates a record for an invoice and attaches it to one or more purchase orders.

The actual invoice files aren't uploaded by calling this endpoint. You can upload the files later using the Upload Invoice endpoint.

Alternatively, the Upload Invoices (with AI) endpoint can create records for the invoices and receive their files in a single API call.

Invoice Number Uniqueness

The combination of invoice_number + supplier must be unique within an outlet. The same invoice_number can exist for different suppliers or across different outlets.

If a duplicate is detected, the endpoint returns a 409 Conflict with an INVOICE_NUMBER_DUPLICATED_EXCEPTION error.