How To Fix /IWBEP/CM_SBMC_MPC018 - Left Entity type is not specified for association '&1'

/IWBEP/CM_SBMC_MPC018 - Overview

• Message type: E = Error

• Message class: /IWBEP/CM_SBMC_MPC -

• Message number: 018

• Message text: Left Entity type is not specified for association '&1'

Self-Explanatory Message

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/IWBEP/CM_SBMC_MPC018 - Details

• The SAP error message /IWBEP/CM_SBMC_MPC018 Left Entity type is not specified for association '&1' typically occurs in the context of SAP Gateway and OData services when there is an issue with the definition of associations in the data model. This error indicates that the left entity type for a specified association is not defined correctly in the metadata.
  
  Cause:
  
  Missing Entity Type Definition: The left entity type for the specified association is not defined in the service's metadata.
  Incorrect Association Definition: The association might be incorrectly defined in the data model, leading to a mismatch between the entities.
  Modeling Errors: There could be errors in the way the OData model is defined, such as typos or incorrect references to entity types.
  Service Activation Issues: The OData service may not be activated properly, leading to incomplete metadata generation.
  
  
  Solution:
  
  
  Check Entity Type Definitions:
  
  Ensure that the left entity type for the association is defined in the data model. You