Specified length is &1, but text is &2

What causes this issue?

A length was input that is shorter than the text, or a text was input
that is longer than the specified length.

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?

Change the text length (maximum 255), or shorten the text.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.