QA system &1 does not match transport settings

What causes this issue?

The active transport route configuration is client-specific. However, a
QA system without a client was specified.

System Response

The specified QA system is ignored.

How to fix this error?

After activating the transport routes, this warning should not appear
again.

Procedure for System Administrators

Check the tp profile parameter <LS>CTC</>. It should not be set or have
the value 0.

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.