How To Fix CNV_DMC_MC_EXCEPTION234 - Message ID already exists


CNV_DMC_MC_EXCEPTION234 - Overview

  • Message type: E = Error

  • Message class: CNV_DMC_MC_EXCEPTION - Exception texts of Migration Object Modeller

  • Message number: 234

  • Message text: Message ID already exists

  • Show details Hide details


  • 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.

    Unfortunately, there isn't any extra information in this error notice.



    What else can you do?

    First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

    Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

    You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.


Smart SAP Assistant

  • What is the cause and solution for SAP error message CNV_DMC_MC_EXCEPTION234 - Message ID already exists ?
    The SAP error message CNV_DMC_MC_EXCEPTION234 with the description "Message ID already exists" typically occurs during data migration or conversion processes, particularly when using the SAP Data Migration Cockpit (DMC) or similar tools. This error indicates that there is a conflict with an existing message ID in the system, which can happen for various reasons.
    Causes:
    
    Duplicate Message IDs: The most common cause is that the message ID you are trying to create or use already exists in the system. This can happen if the same migration object or message is being processed multiple times.
    
    Configuration Issues: There may be issues in the configuration of the migration project or the mapping of data that leads to the generation of duplicate message IDs. Data Consistency: If the data being migrated has inconsistencies or duplicates, it may lead to conflicts in message IDs. Solutions: Check for Duplicates: Review the migration logs and the data being processed to identify if

    Already have an account? Login here!




Instant HelpGet instant SAP help. Sign up for our Free Essentials Plan.


Related SAP Error Messages

Click the links below to see the following related messages:

Click on this link to search all SAP messages.


Rating
The AI Support Assistant is great. It provides comprehensive assistance even on the most difficult issues. I highly recommend this service.
Rate 1
John Jordan
SAP Consultant & Author