How To Fix /IWPGW/TGW_TCM_MSG008 - Return parameter expected to be a structure type

/IWPGW/TGW_TCM_MSG008 - Overview

• Message type: E = Error

• Message class: /IWPGW/TGW_TCM_MSG -

• Message number: 008

• Message text: Return parameter expected to be a structure type

Self-Explanatory Message

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/IWPGW/TGW_TCM_MSG008 - Details

• The SAP error message /IWPGW/TGW_TCM_MSG008 indicates that a return parameter in a function module or method is expected to be a structure type, but it is not. This error typically occurs in the context of SAP Gateway services, where the expected data format does not match the actual data format being returned.
  
  Cause:
  
  Incorrect Data Type: The return parameter defined in the service implementation is not of the expected structure type. For example, it might be defined as a simple data type (like a string or integer) instead of a structured type.
  Service Definition Mismatch: The service definition in the SAP Gateway might not match the implementation. If the service expects a structured return type but the implementation returns a different type, this error will occur.
  Model Issues: If you are using an OData model, the model might not be correctly defined to match the expected structure.
  
  
  Solution:
  
  
  Check Function Module/Method Definition: Review the function module