How To Fix /SAPAPO/OM_ERROR2837 - ATP time series reference counter is negative

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OM_ERROR2 -

• Message number: 837

• Message text: ATP time series reference counter is negative

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM_ERROR2837 - ATP time series reference counter is negative ?

  The SAP error message /SAPAPO/OM_ERROR2837 ATP time series reference counter is negative typically occurs in the context of Advanced Planning and Optimization (APO) within SAP systems. This error indicates that there is an issue with the availability check (ATP - Available to Promise) time series data, specifically that the reference counter for a time series has become negative. This can happen due to various reasons, such as data inconsistencies or issues with the configuration of the time series.
  Causes:
  
  Data Inconsistencies: The time series data may have been corrupted or incorrectly updated, leading to a negative reference counter.
  Incorrect Configuration: The configuration settings for the time series or the ATP check may not be set up correctly.
  Concurrent Processing: Multiple processes trying to update the same time series data simultaneously can lead to inconsistencies.
  Custom Code Issues: If there are custom developments or enhancements in the ATP logic, they might inadvertently cause this issue.
  
  Solutions:
  
  Check Time Series Data: Review the time series data for the affected product and location. Look for any inconsistencies or anomalies that could lead to a negative reference counter.
  Rebuild Time Series: If the time series data is corrupted, you may need to rebuild it. This can often be done through standard SAP transactions or programs designed to regenerate time series data.
  Review Configuration: Ensure that the configuration settings for the ATP check and time series are correct. This includes checking the settings in the APO system and ensuring they align with business requirements.
  Monitor Concurrent Processes: If multiple processes are updating the same time series, consider implementing locking mechanisms or reviewing the process flow to avoid conflicts.
  Check Custom Code: If there are any custom developments related to ATP, review the code to ensure it is functioning as intended and not causing the negative reference counter.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error. SAP frequently releases updates and patches that can resolve known issues.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like /SAPAPO/OM_ORDER or /SAPAPO/OM_COCKPIT to analyze and manage orders and time series data.
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. They can provide more specific guidance based on your system configuration and the details of the error.
  Documentation: Review the SAP APO documentation for more insights into ATP checks and time series management.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.