How To Fix W0138 - Own logical system cannot be used as the original system

SAP Error Message - Details

• Message type: E = Error

• Message class: W0 - Customizing - ISR

• Message number: 138

• Message text: Own logical system cannot be used as the original system

Self-Explanatory Message

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• What is the cause and solution for SAP error message W0138 - Own logical system cannot be used as the original system ?

  SAP Error Message:
  
  W0138 - Own logical system cannot be used as the original system
  
  Cause:
  This warning message occurs in the context of ALE (Application Link Enabling) or IDoc processing when the logical system name of the current SAP system (the "own logical system") is mistakenly used as the "original system" in an IDoc or distribution model.
  
  The own logical system is the identifier of the current SAP system.
  The original system is supposed to be the system where the data originated.
  Using the same logical system for both means the system is trying to treat itself as the source of data, which is logically incorrect in scenarios like inbound IDoc processing or distribution.
  
  This usually happens if:
  
  The logical system name is incorrectly maintained in the partner profiles.
  The IDoc header contains the same logical system as both sender and receiver.
  The distribution model or partner profiles are incorrectly configured.
  
  
  When does it occur?
  
  During inbound IDoc processing.
  When distributing data via ALE.
  When creating or processing IDocs where the original system is set to the same as the current system.
  
  
  Solution:
  
  
  Check Logical System Names:
  
  Go to transaction SALE or BD54 to verify the logical system names.
  Ensure that the logical system name of the current system is unique and correctly maintained.
  
  
  
  Check Partner Profiles:
  
  Use transaction WE20.
  Verify that the partner profiles do not use the own logical system as the sender or original system in inbound processing.
  The sender logical system in inbound partner profiles should be the remote system, not the own system.
  
  
  
  Check Distribution Model:
  
  Use transaction BD64.
  Verify that the distribution model does not specify the own logical system as the original system for inbound messages.
  
  
  
  Check IDoc Header Data:
  
  Use transaction WE02 or WE05 to display the IDoc.
  Check the fields for sender and original system.
  If the original system is the same as the own logical system, investigate why the IDoc was created this way.
  
  
  
  Adjust Configuration:
  
  Correct the logical system assignments in the system.
  Adjust partner profiles and distribution model accordingly.
  
  
  
  
  Additional Information:
  
  The own logical system is defined in SCC4 (Client Administration) or via SALE.
  Logical systems are used to identify different SAP systems in ALE communication.
  This error is a warning (W0138), so processing might continue, but it indicates a configuration issue that can cause data inconsistencies.
  Proper logical system configuration is critical for ALE and IDoc processing to ensure data integrity and correct message routing.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Own logical system used as original system in IDoc or ALE configuration.
  
  
  Effect
  Logical inconsistency in data origin identification; potential processing errors.
  
  
  Solution
  Correct logical system names, partner profiles, and distribution model configuration.
  
  
  Transactions to check
  SALE, BD54, WE20, BD64, WE02/WE05, SCC4
  
  
  
  
  If you need help with specific steps or screenshots, feel free to ask!