How To Fix /UI2/CDMCNV121 - .

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/CDMCNV -

• Message number: 121

• Message text: .

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/CDMCNV121 - . ?

  The SAP error message /UI2/CDMCNV121 typically relates to issues encountered in the SAP Fiori or UI2 framework, particularly when dealing with the conversion of data or the handling of certain UI elements. While the exact cause can vary based on the specific context in which the error occurs, here are some common causes and potential solutions:
  Cause:
  
  Data Conversion Issues: The error may arise when the system is unable to convert data types or formats correctly, especially when dealing with OData services or UI annotations.
  Missing or Incorrect Annotations: If the OData service or the UI annotations are not correctly defined, it can lead to this error.
  Configuration Issues: Incorrect configuration in the Fiori Launchpad or related components can also trigger this error.
  Version Mismatch: Sometimes, the error can occur due to a mismatch between the versions of the SAP components being used.
  
  Solution:
  
  Check OData Service: Ensure that the OData service is correctly defined and activated. You can use transaction code /IWFND/MAINT_SERVICE to check the status of your OData services.
  Review Annotations: Verify that the annotations used in your application are correct and complete. This includes checking for any missing or incorrect metadata.
  Clear Cache: Clear the cache of the browser and the SAP Gateway. You can also use transaction code /IWFND/CACHE_CLEANUP to clear the cache on the server side.
  Check Configuration: Review the configuration settings in the Fiori Launchpad and ensure that all necessary components are properly configured.
  Update Components: If you suspect a version mismatch, ensure that all relevant SAP components are updated to compatible versions.
  Debugging: If the issue persists, consider using debugging tools to trace the error and identify the exact point of failure.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the error message for any specific patches or updates that may address the issue.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Documentation: Refer to the official SAP documentation for Fiori and UI2 for best practices and troubleshooting steps.
  
  If the problem continues after trying these solutions, it may be beneficial to reach out to SAP support for further assistance.