How To Fix DMC_TRANSPORT121 - Force DDIC sync and regeneration of conversion objects

DMC_TRANSPORT121 - Overview

• Message type: E = Error

• Message class: DMC_TRANSPORT - DMC: Nachrichten Transportanschluss

• Message number: 121

• Message text: Force DDIC sync and regeneration of conversion objects

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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Smart SAP Assistant

• What is the cause and solution for SAP error message DMC_TRANSPORT121 - Force DDIC sync and regeneration of conversion objects ?

  The SAP error message DMC_TRANSPORT121 typically indicates an issue related to the Data Migration Cockpit (DMC) where there is a need to synchronize the Data Dictionary (DDIC) and regenerate conversion objects. This error can occur during data migration processes, especially when there are inconsistencies or changes in the data structures.
  
  Cause:
  
  Inconsistent Data Dictionary: The error often arises when there are changes in the data structures (like tables, fields, or data types) that have not been properly synchronized with the Data Migration Cockpit.
  Transport Issues: If there have been recent transports that included changes to the data structures, and these changes have not been reflected in the DMC, it can lead to this error.
  Missing or Outdated Conversion Objects: The conversion objects that are used for data mapping and transformation may be outdated or missing, leading to inconsistencies.
  
  
  Solution:
  To resolve the DMC_TRANSPORT121 error, you can follow these steps:
  
  
  Force DDIC Sync:
  
  Use transaction code SE11 to access