How To Fix /IWBEP/CM_SBMC_MPC001 - Complex Type not specified

/IWBEP/CM_SBMC_MPC001 - Overview

• Message type: E = Error

• Message class: /IWBEP/CM_SBMC_MPC -

• Message number: 001

• Message text: Complex Type not specified

Self-Explanatory Message

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/IWBEP/CM_SBMC_MPC001 - Details

• The SAP error message /IWBEP/CM_SBMC_MPC001 Complex Type not specified typically occurs in the context of SAP Gateway and OData services. This error indicates that there is a problem with the definition of a complex type in the OData model, which is essential for the proper functioning of the service.
  
  Cause:
  
  Missing Complex Type Definition: The error usually arises when a complex type that is expected in the OData service is not defined in the metadata or is incorrectly referenced.
  Model 
  Configuration Issues: There may be issues in the model configuration, such as incorrect associations or navigation properties that reference non-existent complex types.
  Service Registration Issues: The OData service may not be properly registered or activated in the SAP Gateway.
  Versioning Issues: If there are multiple versions of the service, the wrong version might be called, leading to missing definitions.
  
  
  Solution:
  
  
  Check Complex Type Definitions: 
  
  Go to the Data Model in the SAP Gateway Service Builder (transaction code