How To Fix /IWBEP/CM_SBMC_MPC013 - Return Entity/Complex type is not specified for function import '&1'

/IWBEP/CM_SBMC_MPC013 - Overview

• Message type: E = Error

• Message class: /IWBEP/CM_SBMC_MPC -

• Message number: 013

• Message text: Return Entity/Complex type is not specified for function import '&1'

Self-Explanatory Message

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/IWBEP/CM_SBMC_MPC013 - Details

• The SAP error message /IWBEP/CM_SBMC_MPC013 indicates that there is an issue with a function import in an OData service where the return entity or complex type is not specified. This typically occurs in the context of SAP Gateway and OData services when defining function imports in the service's metadata.
  
  Cause:
  
  Missing Return Type: The function import in the OData service is defined without specifying a return type. This means that when the function is called, the system does not know what type of data to expect in response.
  Incorrect Configuration: The function import might be incorrectly configured in the service definition, leading to the absence of a return type.
  Model Issues: There may be issues with the underlying data model or the way entities and complex types are defined in the service.
  
  
  Solution:
  
  
  Define Return Type:
  
  Go to the Service Builder (transaction code SEGW).
  Locate the function import that is causing the error.
  Ensure that a return type (entity