Diagnosis
You want to change, delete or create tab layout '&v1&' again. However,since tab layout '&v1&' is not in the customer name range, you are notallowed to change it, delete it, or create it again.
The SAP standard tab layouts all start with 'SAP'.
Customer tab layouts have to start with 'Y' or 'Z'.

System Response
The action is not carried out.

Procedure
You can create a tab layout that starts with 'Y' or 'Z'.