How To Fix /IWBEP/CM_V4_MED308 - Advertising property '&1' in entity type '&2' must not be key

/IWBEP/CM_V4_MED308 - Overview

• Message type: E = Error

• Message class: /IWBEP/CM_V4_MED -

• Message number: 308

• Message text: Advertising property '&1' in entity type '&2' must not be key

Self-Explanatory Message

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/IWBEP/CM_V4_MED308 - Details

• The SAP error message /IWBEP/CM_V4_MED308 indicates that there is an issue with the definition of an entity type in your OData service. Specifically, the error states that an advertising property (a property that is intended to be exposed in the OData service) is being defined as a key property, which is not allowed.
  
  Cause:
  In OData, key properties are used to uniquely identify an entity instance. Advertising properties, on the other hand, are typically used for additional information that does not uniquely identify an entity. The error occurs when you attempt to define a property as both a key and an advertising property, which violates the OData protocol.
  
  Solution:
  To resolve this error, you need to check the entity type definition in your OData service and ensure that the property in question is not marked as a key if it is intended to be an advertising property. Here are the steps to fix the