How To Fix /SAPAPO/ATP187 - Merge Subitems is only effective if "Create Subitem" is not marked

/SAPAPO/ATP187 - Overview

• Message type: E = Error

• Message class: /SAPAPO/ATP -

• Message number: 187

• Message text: Merge Subitems is only effective if "Create Subitem" is not marked

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/ATP187 - Merge Subitems is only effective if "Create Subitem" is not marked ?

  The SAP error message /SAPAPO/ATP187 indicates that there is an issue with the configuration of subitems in the Advanced Planning and Optimization (APO) module, specifically in the context of Available-to-Promise (ATP) checks. The error message states that the "Merge Subitems" functionality can only be effective if the "Create Subitem" option is not marked.
  
  Cause:
  This error typically occurs when:
  
  The system is configured to create subitems, but at the same time, there is an attempt to merge subitems. These two functionalities are mutually exclusive.
  The settings in the APO system for the product or the planning area are conflicting, leading to this error during ATP checks or during the processing of a sales order.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Configuration Settings:
  
  Go to the configuration settings for the product in the APO system.
  Navigate to the settings related to subitems and ensure that the "Create Subitem" option is not selected if you