How To Fix XT646 - Communication system &2 of &1 deleted

SAP Error Message - Details

• Message type: E = Error

• Message class: XT - Transport Management System

• Message number: 646

• Message text: Communication system &2 of &1 deleted

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message XT646 - Communication system &2 of &1 deleted ?

  The SAP error message XT646 ("Communication system &2 of &1 deleted") typically indicates that a communication system (like a logical system or a communication partner) has been deleted in the SAP system. This can occur in various contexts, such as when working with ALE (Application Link Enabling), IDocs, or other integration scenarios.
  Cause:
  
  Deletion of Logical System: The logical system associated with the communication setup has been deleted.
  Configuration Changes: Changes in the configuration settings, such as the deletion of a communication partner or logical system in transaction codes like SALE, BD54, or WE20.
  Transport Issues: If the configuration was transported from one system to another, and the target system does not have the corresponding logical system or communication partner defined.
  
  Solution:
  
  
  Check Configuration: Verify the configuration in the relevant transactions:
  
  Use transaction SALE to check the logical systems and their assignments.
  Use transaction BD54 to check the logical system settings.
  Use transaction WE20 to check the partner profiles and ensure that the communication system is correctly defined.
  
  
  
  Recreate the Communication System: If the communication system has been deleted, you may need to recreate it:
  
  Go to transaction SALE or BD54 and create a new logical system if necessary.
  Ensure that the new logical system is properly configured and assigned to the relevant clients.
  
  
  
  Transport Configuration: If the issue arose due to a transport, ensure that the transport request includes all necessary objects and configurations. You may need to re-transport the configuration or manually adjust the settings in the target system.
  
  
  Check for Dependencies: Ensure that there are no dependencies on the deleted communication system in other configurations or processes. This may involve checking other related settings or configurations.
  
  
  Related Information:
  
  
  Transaction Codes:
  
  SALE: For ALE configuration.
  BD54: For logical system configuration.
  WE20: For partner profiles.
  
  
  
  Documentation: Refer to SAP Help documentation for detailed information on configuring logical systems and communication partners.
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search for relevant notes in the SAP Support Portal.
  
  
  System Logs: Review system logs (transaction SM21) for any additional error messages or warnings that may provide more context about the issue.
  
  
  By following these steps, you should be able to resolve the XT646 error and restore the necessary communication setup in your SAP system.