How To Fix ATP_SE028 - Requirement class &3 not available (&1, &2)

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 028

• Message text: Requirement class &3 not available (&1, &2)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ATP_SE028 - Requirement class &3 not available (&1, &2) ?

  The SAP error message ATP_SE028 indicates that there is an issue with the availability check for a specific requirement class in the Advanced Planning (ATP) module. The message typically states: "Requirement class &3 not available (&1, &2)," where &1 and &2 represent additional details about the context, and &3 is the requirement class that is not found.
  Cause:
  
  Missing Requirement Class: The requirement class specified in the error message does not exist in the system. This could be due to a configuration issue or because the requirement class has not been defined in the system.
  Incorrect Configuration: The requirement class may not be properly configured in the system, leading to it being unavailable for the ATP check.
  Transport Issues: If the requirement class was recently transported from another system, it may not have been transported correctly or completely.
  Authorization Issues: There may be authorization issues preventing access to the requirement class.
  
  Solution:
  
  
  Check Requirement Class Configuration:
  
  Go to the configuration settings in SAP (Transaction code SPRO).
  Navigate to the relevant section for defining requirement classes (usually under "Advanced Planning" or "Availability Check").
  Verify if the requirement class specified in the error message exists and is correctly configured.
  
  
  
  Create or Modify Requirement Class:
  
  If the requirement class does not exist, you may need to create it. Ensure that you define all necessary parameters and settings.
  If it exists but is not configured correctly, make the necessary adjustments.
  
  
  
  Transport Check:
  
  If the requirement class was supposed to be transported from another system, check the transport logs to ensure that it was transported successfully.
  If there are issues, you may need to re-transport the requirement class.
  
  
  
  Authorization Check:
  
  Ensure that the user has the necessary authorizations to access the requirement class. This can be checked in the user roles and profiles.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to ATP and requirement classes for any additional insights or updates that may be relevant.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: You may find it useful to use transaction codes like SE11 (Data Dictionary), SE80 (Object Navigator), or SPRO (Customizing) to investigate the requirement class and its configuration.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error message 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_SE028 error and implement a solution to resolve it.