How To Fix /SAPAPO/LOM020 - Location change pointers (APO-SNP) could not be written

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/LOM -

• Message number: 020

• Message text: Location change pointers (APO-SNP) could not be written

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/LOM020 - Location change pointers (APO-SNP) could not be written ?

  The SAP error message /SAPAPO/LOM020 Location change pointers (APO-SNP) could not be written typically occurs in the context of SAP Advanced Planning and Optimization (APO), specifically within the Supply Network Planning (SNP) module. This error indicates that the system encountered an issue while trying to write change pointers for locations in the SNP area.
  Causes:
  
  Authorization Issues: The user may not have the necessary authorizations to write change pointers in the APO system.
  Data Consistency Issues: There may be inconsistencies in the master data or transactional data that prevent the system from creating or updating change pointers.
  System Configuration: Incorrect configuration settings in the APO system or in the integration with the ERP system can lead to this error.
  Technical Issues: There could be underlying technical issues, such as database locks, that prevent the writing of change pointers.
  Missing or Incomplete Data: Required data for the location or related objects may be missing or incomplete.
  
  Solutions:
  
  Check Authorizations: Ensure that the user has the necessary authorizations to perform the operation. This can be done by reviewing the user's roles and authorizations in the SAP system.
  Review Master Data: Check the master data for the locations involved. Ensure that all required fields are filled out correctly and that there are no inconsistencies.
  Check Configuration: Review the configuration settings in both the APO and ERP systems to ensure they are set up correctly for change pointer processing.
  Monitor System Logs: Check the system logs (transaction SLG1) for any additional error messages or warnings that could provide more context about the issue.
  Database Locks: Investigate if there are any database locks that might be preventing the writing of change pointers. You can use transaction SM12 to check for locks.
  Reprocess Change Pointers: If the issue is related to previously failed change pointers, you may need to reprocess them. This can be done using transaction /SAPAPO/LOM1.
  Consult SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP Notes often provide patches or workarounds for known issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/LOM1 for managing change pointers and SLG1 for viewing application logs.
  SAP Documentation: Refer to the official SAP documentation for APO and SNP for detailed information on change pointers and their configuration.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis team or SAP support for further investigation.