How To Fix CNVMBT125 - Rule &1 was changed and will be redefined, check extended monitor

CNVMBT125 - Overview

• Message type: E = Error

• Message class: CNVMBT - Messages for MBT/API/PCL

• Message number: 125

• Message text: Rule &1 was changed and will be redefined, check extended monitor

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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CNVMBT125 - Details

• The SAP error message CNVMBT125 typically occurs in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that a specific rule (denoted by &1) has been modified, and as a result, it needs to be redefined. The message suggests that you should check the extended monitor for more details.
  
  Cause:
  
  Rule Modification: The error is triggered when a migration rule that was previously defined has been altered. This could happen due to changes in the source data structure, updates in the migration logic, or adjustments made by users or administrators.
  Inconsistent Data: If the data being processed does not conform to the expected format or structure defined by the migration rules, it may lead to this error.
  
  Configuration Issues: There may be issues with the configuration of the migration project or the rules themselves.
  
  
  Solution:
  
  Check Extended Monitor: The first step is to