How To Fix /IWBEP/CM_MGW_RT059 - Property '&1': Only conversion exits supported on default values

SAP Error Message - Details

• Message type: E = Error

• Message class: /IWBEP/CM_MGW_RT -

• Message number: 059

• Message text: Property '&1': Only conversion exits supported on default values

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /IWBEP/CM_MGW_RT059 - Property '&1': Only conversion exits supported on default values ?

  The SAP error message /IWBEP/CM_MGW_RT059 typically occurs in the context of SAP Gateway and OData services when there is an issue with the default values defined for properties in your OData model. The error message indicates that the property in question is not compatible with the default value you have set, and only conversion exits are supported for default values.
  Cause:
  
  
  Default Value Type Mismatch: The default value you have specified for a property does not match the expected data type of that property. For example, if the property is of type Integer, but the default value is a string, this error may occur.
  
  
  Unsupported Default Value: The default value you are trying to set may not be supported for the specific property type. Only certain types of default values (like those that can be converted) are allowed.
  
  
  Model Definition Issues: There may be issues in the way the OData model is defined, particularly in the metadata where the properties and their types are specified.
  
  
  Solution:
  
  
  Check Property Type: Verify the data type of the property in the OData model. Ensure that the default value you are setting is compatible with this type.
  
  
  Use Conversion Exits: If you need to set a default value, consider using a conversion exit that can handle the conversion of the default value to the appropriate type.
  
  
  Modify Default Value: Change the default value to a valid one that matches the expected type. For example, if the property is an integer, set the default value as an integer.
  
  
  Review OData Model: Check the OData service definition and ensure that all properties are correctly defined with their respective types and constraints.
  
  
  Debugging: If the issue persists, you may want to debug the OData service to see how the default values are being processed and where the error is being triggered.
  
  
  Related Information:
  
  SAP Gateway: This error is related to the SAP Gateway framework, which is used to expose SAP data as OData services.
  OData Services: Understanding how OData services work and how to define properties and their types is crucial for resolving this error.
  SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional insights or updates regarding this error message.
  
  By following these steps, you should be able to identify the root cause of the error and implement a suitable solution.