How To Fix /UI2/CDMFCC168 - Serialization error '&3', for entity &1 '&2'.

SAP Error Message - Details

• Message type: E = Error

• Message class: /UI2/CDMFCC -

• Message number: 168

• Message text: Serialization error '&3', for entity &1 '&2'.

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /UI2/CDMFCC168 - Serialization error '&3', for entity &1 '&2'. ?

  The SAP error message /UI2/CDMFCC168 Serialization error '&3', for entity &1 '&2' typically occurs in the context of SAP Fiori applications or OData services when there is an issue with the serialization of data being sent or received. This error can arise due to various reasons, including data inconsistencies, issues with the OData service, or problems with the underlying data model.
  Causes:
  
  Data Inconsistencies: The data being serialized may not conform to the expected format or structure, leading to serialization errors.
  OData Service Issues: There may be issues with the OData service itself, such as incorrect metadata or problems with the service implementation.
  Model Definition Errors: The entity model may not be correctly defined, leading to serialization issues when the application tries to process the data.
  Large Data Volume: If the data being processed is too large, it may exceed the limits set for serialization, causing the error.
  Network Issues: Intermittent network issues can also lead to serialization errors if the data is not transmitted correctly.
  
  Solutions:
  
  Check Data Consistency: Ensure that the data being processed is consistent and adheres to the expected format. Validate the data in the backend system.
  Review OData Service: Check the OData service for any issues. You can use transaction /IWFND/MAINT_SERVICE to manage and test OData services. Ensure that the service is properly activated and that the metadata is correct.
  Debugging: Use debugging tools to trace the error. You can set breakpoints in the relevant ABAP code to see where the serialization is failing.
  Adjust Data Volume: If the error is related to large data volumes, consider implementing pagination or filtering to reduce the amount of data being processed at one time.
  Check Network Stability: Ensure that there are no network issues that could be causing data transmission problems.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues related to this error message. SAP frequently updates its knowledge base with solutions and workarounds for common errors.
  Transaction Codes: Use transaction codes like /IWFND/ERROR_LOG to view error logs related to OData services.
  Fiori Launchpad: If the error occurs in the Fiori Launchpad, check the configuration and ensure that the necessary roles and authorizations are in place.
  Community Forums: Consider searching or posting on SAP Community forums for additional insights from other users who may have encountered similar issues.
  
  If the problem persists after trying the above solutions, it may be necessary to involve your SAP Basis or development team for further investigation.