How To Fix CLMS_TM017 - Multiplex session failed; another multiplex session is currently running

CLMS_TM017 - Overview

• Message type: E = Error

• Message class: CLMS_TM - Message class for the tenant mulitplexer

• Message number: 017

• Message text: Multiplex session failed; another multiplex session is currently running

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CLMS_TM017 - Multiplex session failed; another multiplex session is currently running ?

  The SAP error message CLMS_TM017 indicates that a multiplex session has failed because another multiplex session is currently running. This typically occurs in the context of SAP's Transport Management System (TMS) or when using the Change and Transport System (CTS) for managing transports between different SAP systems.
  
  Cause:
  
  Concurrent Sessions: The error usually arises when a user attempts to start a new multiplex session while another session is already active. SAP does not allow multiple multiplex sessions to run simultaneously to prevent conflicts and ensure data integrity.
  Long-Running Processes: If a previous multiplex session is taking longer than expected to complete, it may block new sessions from starting.
  System Configuration: There may be configuration settings that limit the number of concurrent multiplex sessions.
  
  
  Solution:
  
  Check Active Sessions: Use transaction code SM50 or SM66 to check for any active processes. Look for any running multiplex sessions and determine if they can be terminated or if they are