Assign a logical system to the current client in Customizing for SAP ERP

What causes this issue?

You have not assigned a logical system to the current client.

System Response

The system cannot determine the logical system.

How to fix this error?

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

Procedure for System Administrators

In Customizing for SAP ERP, assign a logical system to the current
client under <LS>SAP NetWeaver -> Application Server -> IDoc-Interface /
Application Link Enabling (ALE) -> Basic Settings -> Logical Systems ->
Assign Logical System to Client</>.

Error message extract from SAP system. Copyright SAP SE.