How To Fix /SAPAPO/ATP664 - Only main items can be checked in the case of reqmnts grouping (item &/&)

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/ATP -

• Message number: 664

• Message text: Only main items can be checked in the case of reqmnts grouping (item &/&)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/ATP664 - Only main items can be checked in the case of reqmnts grouping (item &/&) ?

  The SAP error message /SAPAPO/ATP664 indicates that there is an issue with the way requirements are grouped in the Advanced Planning and Optimization (APO) module, specifically in the context of Available-to-Promise (ATP) checks. This error typically arises when you attempt to perform an ATP check on a sub-item or component of a grouped requirement, which is not allowed.
  Cause:
  The error occurs because:
  
  Requirements Grouping: In SAP APO, when requirements are grouped, only the main items (or parent items) can be checked for availability. Sub-items or components do not have their own ATP checks in this context.
  Configuration Issues: There may be a configuration issue in the way the requirements are set up or how the ATP check is being executed.
  Data Integrity: There might be inconsistencies in the data related to the items being checked.
  
  Solution:
  To resolve this error, consider the following steps:
  
  
  Check Item Type: Ensure that you are attempting to perform the ATP check on a main item rather than a sub-item. Only main items can be processed for ATP checks when requirements are grouped.
  
  
  Review Requirements Grouping: If you need to check availability for sub-items, you may need to adjust the requirements grouping settings or the way items are structured in your planning process.
  
  
  Configuration Review: Review the configuration settings in the APO system related to ATP checks and requirements grouping. Ensure that they are set up correctly according to your business processes.
  
  
  Data Consistency: Check for any inconsistencies in the master data or transaction data that might be causing the issue. Ensure that all relevant data is correctly maintained.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for more detailed information on ATP checks and requirements grouping.
  
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional guidance.
  
  
  Testing: After making any changes, perform tests to ensure that the ATP checks are functioning as expected without triggering the error.
  
  
  Related Information:
  
  SAP APO ATP: Understanding how ATP works in SAP APO can help in troubleshooting issues related to availability checks.
  Requirements Grouping: Familiarize yourself with how requirements grouping is configured and how it impacts ATP checks.
  SAP Community: Engage with the SAP Community or forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after following these steps, it may be beneficial to consult with an SAP expert or your organization's SAP support team for further assistance.