How To Fix GK109 - Only a top cons group can be created for hierarchy &1

SAP Error Message - Details

• Message type: E = Error

• Message class: GK - Messages for SAP Consolidation

• Message number: 109

• Message text: Only a top cons group can be created for hierarchy &1

What causes this issue?

Every hierarchy has a clearly defined top cons group. Such a top cons
group is already assigned to hierarchy &V1&. Through the selected
action, another top cons group was assigned to hierarchy &V1&, so that
the assignment was not longer clear.

System Response

Error message

How to fix this error?

If required, delete the assignment of the top cons group for hierarchy
&V1&, which already exists, and execute the action again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GK109 - Only a top cons group can be created for hierarchy &1 ?

  The SAP error message GK109 "Only a top cons group can be created for hierarchy &1" typically occurs in the context of creating or managing a hierarchy in the SAP system, particularly in the area of controlling (CO) or financial accounting (FI). This error indicates that the system is trying to create a new consumption group (cons group) in a hierarchy where it is not allowed, usually because the group being created is not at the top level of the hierarchy.
  Cause:
  
  Hierarchy Structure: The error arises when you attempt to create a consumption group that is not at the top level of an existing hierarchy. In SAP, certain operations are restricted to the top level of a hierarchy to maintain data integrity and structure.
  Incorrect Configuration: There may be a misconfiguration in the hierarchy settings or the way the groups are defined.
  User Permissions: The user may not have the necessary permissions to create groups in the specified hierarchy.
  
  Solution:
  
  Check Hierarchy Level: Ensure that you are trying to create the consumption group at the correct level of the hierarchy. You should only create a new group at the top level.
  Review Existing Hierarchies: Look at the existing hierarchy structure to confirm where the top level is and ensure that you are not trying to create a group under a non-top level node.
  Adjust Configuration: If necessary, adjust the configuration of the hierarchy to allow for the creation of groups at the desired level, if that aligns with your business requirements.
  User Authorization: Verify that the user has the appropriate authorizations to create groups in the hierarchy. If not, contact your SAP security administrator to obtain the necessary permissions.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like KAH1 (Create Cost Center Hierarchy) or KAH2 (Change Cost Center Hierarchy) to manage hierarchies.
  SAP Documentation: Refer to the SAP Help Portal or specific documentation related to your version of SAP for detailed information on managing hierarchies and consumption groups.
  Support Notes: Check SAP Notes for any known issues or patches related to this error message, as there may be updates or fixes available.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team for further assistance.