Error 500
Error 500 indicates that the identifier used on the invoice is not matching the required or expected endpointID (identifier) in the Peppol network.
Find the required endpointID on the official Peppol Directory site if the following error message appears:
12003: Document rejected during processing
500: Something went wrong. Please refer to specific error elements below
For the best results, we recommend that you use a single identifier.