How To Fix /IWBEP/CM_V4_MED138 - Nav. property '&1' already used in another navigation property binding

/IWBEP/CM_V4_MED138 - Overview

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 138

• Message text: Nav. property '&1' already used in another navigation property binding

Self-Explanatory Message

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/IWBEP/CM_V4_MED138 - Details

• The SAP error message /IWBEP/CM_V4_MED138 indicates that there is a conflict in the navigation property bindings within your OData service. Specifically, it means that the navigation property you are trying to use (&1 in the error message) is already being utilized in another navigation property binding, which is causing a conflict.
  
  Cause:
  
  Duplicate Navigation Property Usage: The navigation property is defined multiple times in the service or is being referenced in a way that creates ambiguity.
  Incorrect Model Configuration: The OData model may not be configured correctly, leading to conflicts in how navigation properties are defined and used.
  Service Metadata Issues: There may be issues with the service metadata that prevent proper resolution of navigation properties.
  
  
  Solution:
  
  Review Navigation Properties: Check the definitions of your navigation properties in the OData model. Ensure that each navigation property is uniquely defined and not reused in a conflicting manner.
  Adjust Model Bindings: If you have multiple bindings for the same