How To Fix /SAPAPO/DP_EVENT153 - Event Catalog &1 is on the top level of the hierarchy, cannot unassign

/SAPAPO/DP_EVENT153 - Overview

• Message type: E = Error

• Message class: /SAPAPO/DP_EVENT -

• Message number: 153

• Message text: Event Catalog &1 is on the top level of the hierarchy, cannot unassign

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/DP_EVENT153 - Event Catalog &1 is on the top level of the hierarchy, cannot unassign ?

  The SAP error message /SAPAPO/DP_EVENT153 indicates that you are trying to unassign an event catalog that is at the top level of the hierarchy in the Demand Planning (DP) module of SAP Advanced Planning and Optimization (APO). This error typically occurs when you attempt to remove or unassign a top-level event catalog from a planning book or a data view, which is not allowed because it serves as a parent for other elements in the hierarchy.
  
  Cause:
  
  Top-Level Hierarchy: The event catalog you are trying to unassign is the top-level node in the hierarchy. In SAP, top-level nodes cannot be unassigned or deleted as they are essential for maintaining the structure of the hierarchy.
  Data Dependencies: There may be other dependent objects or data that rely on this top-level event catalog, making it necessary to keep it intact.
  
  
  Solution:
  
  Check Hierarchy Structure: Review the hierarchy structure in your event catalog. Ensure that you are not