BW system &1 is not correctly connected to BW source system &2

What causes this issue?

Connections are not maintained correctly between the BW system &V1& and
the BW source system &V2&.

System Response

Errors occur during post system copy configuration.

How to fix this error?

Go to transaction RSA1 of BW system &V1&. Locate the source system &V2&
in the <ZK>Source Systems </>tab. Right click and perform a check.
Repair the connection based on the displayed error messages.

Procedure for System Administrators

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.