How To Fix /IWFND/CM_MGW_RT029 - Transformation error on serialization

/IWFND/CM_MGW_RT029 - Overview

• Message type: E = Error

• Message class: /IWFND/CM_MGW_RT -

• Message number: 029

• Message text: Transformation error on serialization

Self-Explanatory Message

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/IWFND/CM_MGW_RT029 - Details

• The SAP error message /IWFND/CM_MGW_RT029 Transformation error on serialization typically occurs in the context of SAP Gateway and OData services. This error indicates that there is an issue during the serialization process of the data being sent from the backend to the frontend, often due to problems with the data structure or the mapping of the data.
  Causes:
  
  
  Data Structure Issues: The data being serialized may not match the expected structure defined in the OData service. This can happen if there are missing fields, incorrect data types, or unexpected null values.
  
  
  Mapping Errors: If there are issues in the mapping between the backend data model and the OData service, it can lead to serialization errors. This includes incorrect annotations or missing associations.
  
  
  Complex Types: If the OData service is trying to serialize complex types that are not properly defined or have circular references, it can lead to serialization errors.
  
  
  Data Consistency: Inconsistent data in the