SII document ID cannot be determined for FI-CA document &1

What causes this issue?

The system cannot determint the ID for the SII document.
The document consists of three parts;
- Invoice date
- Invoice number
- Tax ID of the invoice

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

You must check and maintain your Customizing.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.