Lock parameter name & has more than & characters and is thus invalid

What causes this issue?

The name of the lock parameter contains more than 16 characters, but no
more than 16 characters are allowed for a lock parameter name.

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?

Shorten the name of the lock parameter to at most 16 characters.
When you create a lock object, the field names of the key fields of the
table of the lock object are normally assigned as lock parameter names.
You can change or shorten these names.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.