How To Fix CNV_DMC_MC_EXCEPTION155 - Error during file upload

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 155

• Message text: Error during file upload

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_EXCEPTION155 - Error during file upload ?

  The SAP error message CNV_DMC_MC_EXCEPTION155 typically occurs during the data migration process, particularly when using the SAP Data Migration Cockpit (DMC). This error indicates that there was an issue during the file upload process, which can be caused by various factors. Here are some common causes, potential solutions, and related information:
  Causes:
  
  File Format Issues: The uploaded file may not be in the expected format (e.g., CSV, Excel) or may contain invalid characters.
  Data Validation Errors: The data in the file may not meet the validation rules defined in the target system, such as mandatory fields being empty or data types not matching.
  File Size Limitations: The file being uploaded may exceed the maximum size limit allowed by the system.
  Network Issues: Temporary network issues or interruptions during the upload process can lead to this error.
  Authorization Issues: The user may not have the necessary permissions to upload files or access the required data migration objects.
  System Configuration: Incorrect configuration settings in the DMC or the target system can lead to upload failures.
  
  Solutions:
  
  Check File Format: Ensure that the file is in the correct format and adheres to the specifications required by the DMC.
  Validate Data: Review the data in the file for any validation errors. Ensure that all mandatory fields are filled and that data types are correct.
  Reduce File Size: If the file is too large, consider splitting it into smaller files and uploading them separately.
  Retry Upload: If the error was due to a temporary network issue, try uploading the file again.
  Check Authorizations: Verify that the user has the necessary authorizations to perform the upload. Consult with your SAP security team if needed.
  Review Configuration: Check the configuration settings in the DMC and the target system to ensure they are set up correctly for the migration process.
  Consult Logs: Review the application logs for more detailed error messages that can provide insights into the specific cause of the failure.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Refer to the official SAP documentation for the Data Migration Cockpit for detailed guidelines on file formats, data requirements, and troubleshooting steps.
  
  If the issue persists after trying the above solutions, it may be beneficial to contact SAP support for further assistance.