eDocument Spain (efactura) full solution - IBAN mapping

Hello All,

We are implementing solution for sending electronic invoices to public institutions through SAP's full solution for edocuments (B2G).

The document is sent correctly and we receive a reply from the entity but we are rejected for lack of data (IBAN, due date, payment means).

The generated XML does not carry this data in xml tag <Paymentdetails> and we do not know where we can map it (exit, badi...).

Example below:

Already raised OSS Ticket and the response is useless - check SAP JAM page - already checked before the OSS Ticket created and there is no information about mapping of payment details as IBAN, neither in Knowledge base.

Someone has found in a similar situation. Any ideas would be appreciated.

Thanks you.