Internal error: &1 &2 &3 &4

What causes this issue?

An unexpected error occurred that is most likely due to a programming
error.

System Response

Processing is aborted.

How to fix this error?

Search for a note with this error message, message class, and message
ID. Contact SAP support if you can not find such a note.

Procedure for System Administrators

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.