How To Fix /UI2/CDMCNV400 - ======= 401 - 499: Conversion Process

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/CDMCNV -

• Message number: 400

• Message text: ======= 401 - 499: Conversion Process

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 /UI2/CDMCNV400 - ======= 401 - 499: Conversion Process ?

  The SAP error message /UI2/CDMCNV400 with the description "401 - 499: Conversion Process" typically indicates an issue related to the conversion of data in the SAP Fiori or UI2 framework. This error can occur during the conversion of data types or structures when the system is trying to process a request.
  Possible Causes:
  
  Data Type Mismatch: The data being processed may not match the expected data types or structures defined in the system.
  Configuration Issues: There may be misconfigurations in the Fiori/UI2 settings or in the underlying OData services.
  Missing or Incomplete Data: Required fields or data may be missing, leading to conversion failures.
  System Bugs: There could be bugs in the SAP system or specific components that are causing the conversion to fail.
  Version Compatibility: The error may arise due to compatibility issues between different versions of SAP components.
  
  Solutions:
  
  Check Data Types: Review the data being sent to the system and ensure that it matches the expected types and structures.
  Review OData Services: Check the OData service definitions and ensure that they are correctly configured and activated.
  Debugging: Use transaction codes like /IWFND/ERROR_LOG to check for detailed error logs related to the OData service and identify the root cause.
  Check for Missing Data: Ensure that all required fields are populated and that the data being processed is complete.
  Update System: If the issue is due to a known bug, check for any available patches or updates from SAP that may resolve the issue.
  Consult SAP Notes: Search the SAP Support Portal for any relevant SAP Notes that may address this specific error message.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like /IWFND/ERROR_LOG for error logs and /IWFND/MAINT_SERVICE to manage OData services.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed information about the error and the context in which it occurs.
  
  By following these steps, you should be able to diagnose and resolve the /UI2/CDMCNV400 error effectively.