How To Fix /SAPAPO/SCMB_PSTRU121 - Type of active planning object structure &1 must not be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/SCMB_PSTRU -

• Message number: 121

• Message text: Type of active planning object structure &1 must not be changed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/SCMB_PSTRU121 - Type of active planning object structure &1 must not be changed ?

  The SAP error message /SAPAPO/SCMB_PSTRU121 indicates that there is an attempt to change the type of an active planning object structure in SAP Advanced Planning and Optimization (APO). This error typically arises when you try to modify a planning object structure that is currently in use, which is not allowed in SAP APO.
  Cause:
  
  Active Planning Object Structure: The planning object structure you are trying to modify is currently active and being used in planning scenarios.
  System Restrictions: SAP has built-in restrictions to prevent changes to active structures to maintain data integrity and consistency in planning processes.
  Dependencies: There may be dependencies or references to this planning object structure in other configurations or processes.
  
  Solution:
  
  Deactivate the Planning Object Structure: If you need to make changes, you must first deactivate the planning object structure. This can typically be done in the SAP APO system by navigating to the relevant configuration settings and deactivating the structure.
  Create a New Structure: If deactivating is not an option or if you need to maintain the current structure, consider creating a new planning object structure with the desired changes instead of modifying the existing one.
  Check Dependencies: Before making any changes, check for any dependencies or references to the planning object structure in other configurations or processes. Ensure that these are addressed before proceeding.
  Consult Documentation: Review SAP documentation or notes related to planning object structures for any specific guidelines or best practices.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like /SAPAPO/OM17 (for planning object structures) to view or manage planning object structures.
  SAP Notes: Check for any relevant SAP Notes that might provide additional insights or solutions related to this error.
  Testing: After making changes, ensure to test the planning scenarios to confirm that everything is functioning as expected.
  
  If you continue to face issues, consider reaching out to your SAP support team or consulting with an SAP expert who specializes in APO for further assistance.