How To Fix KQ019 - Hierarchy & already summarized. Deletion not allowed

KQ019 - Overview

• Message type: E = Error

• Message class: KQ - Error Messages for Customizing Product Costing

• Message number: 019

• Message text: Hierarchy & already summarized. Deletion not allowed

What causes this issue?

The hierarchy has already been summarized. Data for this hierarchy is
present in the system. Before you can delete the hierarchy, you must
delete the hierarchy data.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

If you really want to delete the hierarchy, you must first carry out a
deletion run in the transaction for data collection.

Error message extract from SAP system. Copyright SAP SE.

KQ019 - Details

• The SAP error message KQ019 ("Hierarchy & already summarized. Deletion not allowed") typically occurs in the context of SAP Controlling (CO) when you attempt to delete a hierarchy node that has already been summarized or aggregated. This means that the node is part of a higher-level structure, and SAP prevents deletion to maintain data integrity.
  
  Cause:
  
  Hierarchy Structure: The node you are trying to delete is part of a hierarchy that has already been summarized. This means that it has been used in calculations or reports, and deleting it could lead to inconsistencies.
  Data Integrity: SAP enforces rules to ensure that the data remains consistent and reliable. Deleting a summarized node could disrupt the relationships and calculations that depend on that node.
  
  
  Solution:
  
  Check Dependencies: Before attempting to delete a hierarchy node, check if it is being used in any reports or calculations. You may need to unassign or remove it from those dependencies first.
  Un-summarize: