How To Fix IDCN127 - Account Level &1 has already been assigned to Account Level Hierarchy &2

IDCN127 - Overview

• Message type: E = Error

• Message class: IDCN -

• Message number: 127

• Message text: Account Level &1 has already been assigned to Account Level Hierarchy &2

What causes this issue?

You are trying to assign <LS>Account Level </> &V1& to <LS>Account Level
Hierarchy</> &V2&, but the <LS>Account Level </>is already used in the
hierarchy.

System Response

Each <LS>Account Level </>can be used in <LS>Account Level Hierarchy</>
only once.

How to fix this error?

Add unassigned account levels to the <LS>Account Level Hierarchy</>.

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.

IDCN127 - Details

• The SAP error message IDCN127 indicates that an account level (specified as &1) has already been assigned to a specific account level hierarchy (specified as &2). This error typically occurs when you attempt to assign an account level to a hierarchy that it is already part of, which is not allowed in SAP.
  
  Cause:
  
  Duplicate Assignment: The account level you are trying to assign is already linked to the specified account level hierarchy.
  Incorrect Hierarchy Structure: The hierarchy structure may not allow for multiple assignments of the same account level to different hierarchies.
  Data Integrity Rules: SAP enforces data integrity rules that prevent the same account level from being assigned to multiple hierarchies simultaneously.
  
  
  Solution:
  
  
  Check Existing Assignments: 
  
  Go to the account level hierarchy configuration in SAP and check if the account level is already assigned to the specified hierarchy.
  You can use transaction codes like OBH1 (for account hierarchy) to view existing assignments.
  
  
  
  Remove Existing Assignment:
  
  If you