How To Fix USMDZ3368 - This action is not allowed for &3 in the standard hierarchy &4

SAP Error Message - Details

• Message type: E = Error

• Message class: USMDZ3 - Nachrichtenklasse zum UI des User-Interfaces

• Message number: 368

• Message text: This action is not allowed for &3 in the standard hierarchy &4

What causes this issue?

You are directly processing the standard hierarchy. The following
actions are invalid for individual values:
Removing/deleting groups that already contain values

System Response

This action is not allowed in the standard hierarchy.

How to fix this error?

Undo the change you wanted to make.

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.