How To Fix GRPG123 - This assignment causes an inconsistency in the group hierarchy

SAP Error Message - Details

• Message type: E = Error

• Message class: GRPG - Grouping/Pegging for Individual Project Planning

• Message number: 123

• Message text: This assignment causes an inconsistency in the group hierarchy

What causes this issue?

Recursive group structures are not allowed. You treis to assign a
grouping WBS element to another grouping WBS element, which itself is
assigned to the first grouping WBS element.

System Response

INCLUDE NA_ALLG_NOVERARBEITUNG OBJECT DOKU ID TX

How to fix this error?

Check the assignement of the WBS elements to grouping WBS elements and
make sure that no grouping WBS element is assigned to another grouping
WBS element, which itself is assigned to the first grouping WBS element
(also via several steps).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GRPG123 - This assignment causes an inconsistency in the group hierarchy ?

  The SAP error message GRPG123, which states "This assignment causes an inconsistency in the group hierarchy," typically occurs in the context of managing group hierarchies in SAP, particularly in modules like SAP Controlling (CO) or SAP Financial Accounting (FI). This error indicates that the assignment you are trying to make violates the rules of the hierarchy structure defined in the system.
  Causes:
  
  Circular References: The assignment may create a circular reference in the hierarchy, where a group references itself either directly or indirectly.
  Invalid Parent-Child Relationships: The assignment may violate the defined parent-child relationships in the hierarchy. For example, trying to assign a child node to a parent that is not valid.
  Hierarchy Level Restrictions: The assignment may not comply with the restrictions on hierarchy levels, such as trying to assign a group at a level that is not allowed.
  Missing or Inactive Nodes: The group you are trying to assign may be inactive or missing in the hierarchy, leading to inconsistencies.
  
  Solutions:
  
  Check Hierarchy Structure: Review the current hierarchy structure to ensure that the assignment you are trying to make does not create any circular references or invalid relationships.
  Validate Parent-Child Relationships: Ensure that the parent group you are trying to assign to is valid and that the child group can be assigned to it according to the hierarchy rules.
  Use the Hierarchy Maintenance Transaction: Use transaction codes like KSH1 (Create Group) or KSH2 (Change Group) to review and modify the hierarchy structure as needed.
  Check for Inactive Groups: Ensure that all groups involved in the assignment are active and properly defined in the system.
  Consult Documentation: Refer to SAP documentation or help resources for specific rules regarding group hierarchy assignments in your version of SAP.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes for managing group hierarchies, such as KSH1, KSH2, KSH3 (Display Group), and KSH4 (Hierarchy Display).
  SAP Notes: Check SAP Notes for any known issues or patches related to group hierarchy management that may address this error.
  User Authorization: Ensure that you have the necessary authorizations to make changes to the group hierarchy.
  Testing Changes: Before making significant changes to the hierarchy, consider testing in a development or sandbox environment to avoid impacting production data.
  
  If the issue persists after checking these aspects, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in the relevant module.