How To Fix CNVMBTDEX001 - File type & is unknown

SAP Error Message - Details

• Message type: E = Error

• Message class: CNVMBTDEX - DMIS DEX: Data Extracts

• Message number: 001

• Message text: File type & is unknown

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 CNVMBTDEX001 - File type & is unknown ?

  The SAP error message CNVMBTDEX001 typically indicates that the system has encountered a file type that it does not recognize or support during a data migration or conversion process. This error is often associated with the SAP Data Migration or Conversion tools, particularly when using the SAP S/4HANA Migration Cockpit or similar tools.
  Cause:
  
  Unsupported File Format: The file being uploaded or processed is in a format that the SAP system does not recognize. This could be due to an incorrect file extension or a corrupted file.
  Incorrect Configuration: The configuration settings for the data migration process may not be set up correctly, leading to the system not being able to identify the file type.
  File Naming Issues: The file name may not conform to the expected naming conventions or may contain special characters that are not allowed.
  Version Mismatch: The version of the migration tool or the SAP system may not support the file type being used.
  
  Solution:
  
  Check File Format: Ensure that the file you are trying to upload is in the correct format. Common formats include CSV, XLSX, or TXT, depending on the specific requirements of the migration tool.
  Verify Configuration: Review the configuration settings in the migration tool to ensure that they are set up correctly for the type of data you are trying to import.
  Rename the File: If the file name contains special characters or does not follow the expected naming convention, rename the file to a simpler name that adheres to standard naming practices.
  Use Supported Versions: Ensure that you are using a version of the migration tool that is compatible with your SAP system. Check for any updates or patches that may need to be applied.
  Consult Documentation: Refer to the official SAP documentation for the specific migration tool you are using to ensure that you are following the correct procedures and using supported file types.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the specific migration tool you are using. SAP frequently releases notes that address known issues and provide solutions.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Logs and Traces: Review any logs or traces generated during the migration process for additional details that may help identify the root cause of the error.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.