How To Fix /ISDFPS/PM_DIS175 - Cannot determine ALE central system

SAP Error Message - Details

• Message type: E = Error

• Message class: /ISDFPS/PM_DIS -

• Message number: 175

• Message text: Cannot determine ALE central system

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /ISDFPS/PM_DIS175 - Cannot determine ALE central system ?

  The SAP error message /ISDFPS/PM_DIS175 Cannot determine ALE central system typically occurs in the context of Advanced Planning and Optimization (APO) or when dealing with Application Link Enabling (ALE) configurations. This error indicates that the system is unable to identify the central system for the ALE communication, which is essential for data exchange between different SAP systems.
  Causes:
  
  Missing Configuration: The ALE configuration might not be set up correctly. This includes missing logical systems or incorrect settings in the distribution model.
  Incorrect Logical System Name: The logical system name might be incorrectly defined or not assigned to the relevant client.
  Transport Layer Issues: There may be issues with the transport layer settings that prevent the system from identifying the central system.
  Authorization Issues: The user might not have the necessary authorizations to access the ALE configuration.
  Network Issues: There could be network connectivity issues between the systems involved in the ALE communication.
  
  Solutions:
  
  
  Check ALE Configuration:
  
  Go to transaction SALE and verify the ALE configuration.
  Ensure that the logical systems are correctly defined and assigned to the appropriate clients.
  Check the distribution model (transaction BD64) to ensure that the necessary message types and filters are set up correctly.
  
  
  
  Verify Logical System Names:
  
  Use transaction SCC4 to check the logical system names and ensure they are correctly defined.
  Make sure that the logical system name matches the one used in the ALE configuration.
  
  
  
  Review Transport Layer Settings:
  
  Check the transport layer settings in transaction SCC1 to ensure that they are correctly configured for the systems involved.
  
  
  
  Check Authorizations:
  
  Ensure that the user has the necessary authorizations to access and modify ALE settings.
  
  
  
  Network Connectivity:
  
  Verify that there are no network issues preventing communication between the systems. This may involve checking firewalls, network routes, and other connectivity settings.
  
  
  
  Debugging:
  
  If the issue persists, consider debugging the process to identify where the system fails to determine the central system. This may require technical expertise.
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SALE: ALE Configuration
  BD64: Distribution Model
  SCC4: Client Administration
  SCC1: Transport Layer Configuration
  
  
  
  Documentation: Refer to SAP Help documentation for detailed information on ALE configuration and troubleshooting.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  If the problem continues after following these steps, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.