Internal error when calling BAPI: &1

What causes this issue?

An internal error occured when executing the BAPIs. A program error in
the BAPI probably occured.

System Response

Execution was terminated.

How to fix this error?

Contact SAP Support.

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

Error message extract from SAP system. Copyright SAP SE.