Specify a valid BC Set name

What causes this issue?

You have chosen an invalid BC Set name.
This could be because:
The BC Set namespace is not allowed (e.g. <ZH><ZU>/</></>xyz <ZH> <ZU>/
</></>abcdefg)
The BC Set cannot be put in a transport request with the selected name

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

System Response

Processing is cancelled.

How to fix this error?

Choose another name or namespace for the BC Set.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.