How To Fix /SAPAPO/PDEM320 - Internal error in ATP call (order &1 item &2) occors

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/PDEM -

• Message number: 320

• Message text: Internal error in ATP call (order &1 item &2) occors

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/PDEM320 - Internal error in ATP call (order &1 item &2) occors ?

  The SAP error message /SAPAPO/PDEM320 Internal error in ATP call (order &1 item &2) typically occurs in the Advanced Planning and Optimization (APO) module, particularly during the Available-to-Promise (ATP) check. This error indicates that there is an internal issue when the system attempts to perform an ATP check for a specific order and item.
  Possible Causes:
  
  Data Inconsistencies: There may be inconsistencies in the master data or transaction data related to the order or item.
  Configuration Issues: Incorrect configuration settings in the APO system can lead to internal errors during ATP checks.
  System Bugs: There may be bugs or issues in the version of SAP you are using that could lead to this error.
  Missing or Incomplete Data: Required data for the ATP check may be missing or incomplete, such as product master data, location data, or stock levels.
  Performance Issues: If the system is under heavy load or if there are performance issues, it may lead to internal errors.
  
  Solutions:
  
  Check Master Data: Verify that the master data for the product and location is complete and consistent. This includes checking the product master, location master, and any relevant planning data.
  Review Configuration: Ensure that the configuration settings for ATP checks in the APO system are correct. This includes checking the settings for the ATP check strategy and any relevant parameters.
  Analyze Logs: Check the system logs (transaction SLG1) for more detailed error messages or stack traces that can provide insights into the root cause of the issue.
  Update SAP: If you suspect a bug, check for any available SAP Notes or patches that address this specific error. Applying the latest support packages or patches may resolve the issue.
  Test in a Development Environment: If possible, replicate the issue in a development or test environment to analyze the behavior without affecting production data.
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP Support for assistance. Provide them with the error message details and any relevant logs.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like /SAPAPO/ATC (for ATP check) or /SAPAPO/SDP94 (for planning book) to analyze the data related to the order and item.
  SAP Notes: Search the SAP Support Portal for relevant SAP Notes that may address this specific error or provide guidance on troubleshooting.
  Documentation: Review the SAP documentation for ATP checks in APO to ensure that you are following the correct procedures and configurations.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution.