Message type: E = Error
Message class:  /SAPAPO/IB00XI -  
Message number: 004
Message text: Communication error: unknown PERSID_ID &1
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The SAP error message /SAPAPO/IB00XI004 Communication error: unknown PERSID_ID &1 typically occurs in the context of SAP Advanced Planning and Optimization (APO) when there is an issue with communication between the APO system and other systems, such as SAP ERP or other connected systems. The error indicates that the system is unable to recognize or find the specified PERSID_ID, which is a unique identifier for a session or a user. Causes: Invalid or Missing PERSID_ID: The PERSID_ID being referenced may not exist in the system, or it may have been deleted or not created properly. Communication Issues: There may be network issues or configuration problems that prevent proper communication between systems. Session Timeout: The session associated with the PERSID_ID may have timed out or been terminated unexpectedly. Configuration Errors: There may be issues with the configuration of the integration between SAP APO and other systems, such as incorrect RFC destinations or settings. Solutions: Check PERSID_ID: Verify that
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