Error when accessing system &1

What causes this issue?

There was an error while accessing system <LS>&V1&</> with TMS.

System Response

The function terminates.

How to fix this error?

Use the <DS:REPO.RSTMSAMO>TMS Alert Viewer</>, to analyze the error.

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.