How To Fix UGWB019 - Another node cannot be assigned to this entry

UGWB019 - Overview

• Message type: E = Error

• Message class: UGWB - Messages for Workbench

• Message number: 019

• Message text: Another node cannot be assigned to this entry

What causes this issue?

You want to insert another node under a hierarchy node of
characteristic &V1&. However, the definition of characteristic &V2&
does not permit insertions of more nodes under the nodes of
characteristic &V1&.

System Response

Operation terminated

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

Error message extract from SAP system. Copyright SAP SE.

UGWB019 - Details

• The SAP error message UGWB019, which states "Another node cannot be assigned to this entry," typically occurs in the context of hierarchical data structures, such as when working with organizational units, cost centers, or other master data that is organized in a tree-like structure.
  
  Cause:
  This error usually arises when you attempt to assign a node (such as a cost center or organizational unit) to a parent node that already has a different node assigned to it. In hierarchical structures, each parent node can only have one direct child node of a specific type. If you try to assign a second node to the same parent, SAP will throw this error.
  
  Solution:
  To resolve the UGWB019 error, you can take the following steps:
  
  
  Check Existing Assignments: Review the current assignments of the parent node to see if it already has a child node assigned. You can do this by navigating to the relevant transaction (e.g.,