How To Fix CNV_DMC_UI_FW_EXCEPT056 - Unable to render cell color; see longtext

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_UI_FW_EXCEPT - Messages for exception classes

• Message number: 056

• Message text: Unable to render cell color; see longtext

What causes this issue?

Missing field to keep color information on instance of class
CL_DMC_UI_VIEW_LIST.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

You are trying to use a color renderer of type
IF_DMC_UI_VIEW_LIST_COLOR_REND which is required to display cells in a
specific color on an instance of class CL_DMC_UI_VIEW_LIST.
Your table data structure has to have a separate field to keep the color
information. Therefor you have to add a field with various name but of
type LVC_T_SCOL.
This field is filled with the color information given by your color
renderer.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_UI_FW_EXCEPT056 - Unable to render cell color; see longtext ?

  The SAP error message CNV_DMC_UI_FW_EXCEPT056 with the description "Unable to render cell color; see longtext" typically occurs in the context of the SAP Data Migration Cockpit (DMC) or during data migration activities. This error is related to the rendering of UI elements, specifically the cell colors in the data migration interface.
  Cause:
  The error can be caused by several factors, including:
  
  Data Issues: There may be issues with the data being processed, such as invalid or unexpected values that the UI cannot handle.
  Configuration Problems: Incorrect configuration settings in the DMC or related components may lead to rendering issues.
  UI Component Bugs: There may be bugs or limitations in the UI components of the SAP system that prevent proper rendering.
  Browser Compatibility: Sometimes, the issue can be related to the web browser being used to access the SAP DMC. Certain browsers may not fully support the required features.
  
  Solution:
  To resolve this error, you can try the following steps:
  
  
  Check Data Validity: Review the data being processed to ensure that it does not contain any invalid or unexpected values. Clean or correct any problematic data entries.
  
  
  Review Configuration: Ensure that the configuration settings for the Data Migration Cockpit are correct. Check for any recent changes that might have affected the configuration.
  
  
  Update SAP System: Ensure that your SAP system is up to date with the latest patches and updates. Sometimes, bugs are fixed in newer versions.
  
  
  Browser Compatibility: Try accessing the SAP DMC using a different web browser or updating your current browser to the latest version. Clear the browser cache and cookies as well.
  
  
  Check SAP Notes: Look for any relevant SAP Notes or Knowledge Base Articles (KBAs) that address this specific error. SAP frequently publishes notes that provide solutions or workarounds for known issues.
  
  
  Contact SAP Support: If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error, including any relevant logs or screenshots.
  
  
  Related Information:
  
  SAP Data Migration Cockpit (DMC): This is a tool used for data migration in SAP S/4HANA projects. It provides a user-friendly interface for managing data migration tasks.
  SAP Notes and KBAs: Regularly check the SAP Support Portal for updates, notes, and articles related to the DMC and specific error messages.
  Community Forums: Engage with the SAP Community to see if other users have encountered similar issues and what solutions they have found.
  
  By following these steps, you should be able to diagnose and resolve the CNV_DMC_UI_FW_EXCEPT056 error effectively.