Message type: E = Error
Message class: XT - Transport Management System
Message number: 646
Message text: Communication system &2 of &1 deleted
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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
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