How To Fix DMCLG434 - Mass transfer &1 is in active phase &2, start in phase &3 not possible

DMCLG434 - Overview

• Message type: E = Error

• Message class: DMCLG - DMC Tool Development

• Message number: 434

• Message text: Mass transfer &1 is in active phase &2, start in phase &3 not possible

Self-Explanatory Message

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DMCLG434 - Details

• The SAP error message DMCLG434 indicates that a mass transfer process is currently in an active phase, and therefore, it cannot be started in a new phase. This error typically occurs in the context of data migration or mass data processing activities, such as during the use of the Data Migration Cockpit or similar tools.
  
  Cause:
  
  Active Phase: The mass transfer process is still running or has not completed its current phase. This means that the system is busy processing data, and you cannot initiate a new phase until the current one is finished.
  Locking Mechanism: SAP uses locking mechanisms to prevent data inconsistencies. If a mass transfer is in progress, it locks certain resources, preventing new processes from starting.
  
  Configuration Issues: There may be configuration issues or errors in the setup of the mass transfer process that are causing it to hang or take longer than expected.
  
  
  Solution:
  
  Check Current Status: Use transaction codes like