How To Fix ATP_SE026 - Could not determine requirement class for &1 &2

SAP Error Message - Details

• Message type: E = Error

• Message class: ATP_SE - Message class for ATP-Services

• Message number: 026

• Message text: Could not determine requirement class for &1 &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ATP_SE026 - Could not determine requirement class for &1 &2 ?

  The SAP error message ATP_SE026, which states "Could not determine requirement class for &1 &2," typically occurs in the context of Advanced Planning and Optimization (APO) or in the context of Available-to-Promise (ATP) checks. This error indicates that the system is unable to determine the requirement class for a specific material or order type.
  Causes:
  
  Missing Configuration: The requirement class may not be defined in the system for the specific material or order type.
  Incorrect Material Master Data: The material master data may be incomplete or incorrectly maintained, leading to the inability to determine the requirement class.
  Missing Customizing Settings: The necessary customizing settings for the ATP check or the requirement class may not be properly configured.
  Inconsistent Data: There may be inconsistencies in the data related to the material or the order type that prevent the system from determining the requirement class.
  
  Solutions:
  
  
  Check Requirement Class Configuration:
  
  Go to the customizing settings in SAP (transaction SPRO).
  Navigate to the relevant section for defining requirement classes and ensure that the requirement class for the specific material and order type is defined.
  
  
  
  Review Material Master Data:
  
  Use transaction MM03 to display the material master data.
  Check if all necessary views (especially MRP and Sales views) are properly maintained and that the requirement class is assigned.
  
  
  
  Customizing Settings:
  
  Ensure that the customizing settings for ATP checks are correctly set up. This includes checking the settings for the relevant planning area and the requirement classes.
  
  
  
  Data Consistency Check:
  
  Run consistency checks on the data related to the material and order type to identify any discrepancies.
  Use transaction code /SAPAPO/ATPCHECK to perform ATP checks and see if there are any underlying issues.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to ATP and requirement classes for any specific guidance or known issues.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance, providing them with the error details and any relevant configuration information.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  MM03 (Display Material Master)
  SPRO (Customizing)
  /SAPAPO/ATPCHECK (ATP Check)
  
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  
  
  Documentation: Review the SAP Help Portal for detailed information on ATP and requirement classes.
  
  
  By following these steps, you should be able to identify the cause of the ATP_SE026 error and implement a solution to resolve it.