How To Fix /IWBEP/SBUIOD025 - Select at least one property as key for Entity Type '&1'

/IWBEP/SBUIOD025 - Overview

• Message type: E = Error

• Message class: /IWBEP/SBUIOD -

• Message number: 025

• Message text: Select at least one property as key for Entity Type '&1'

Self-Explanatory Message

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/IWBEP/SBUIOD025 - Details

• The SAP error message /IWBEP/SBUIOD025 Select at least one property as key for Entity Type '&1' typically occurs in the context of SAP Gateway and OData services when defining an entity type in the service metadata. This error indicates that the entity type specified (represented by &1) does not have any properties defined as keys, which is a requirement for OData entity types.
  
  Cause:
  
  Missing Key Property: The entity type does not have any properties marked as keys. In OData, every entity type must have at least one key property to uniquely identify instances of that entity.
  Incorrect Configuration: The entity type might be incorrectly configured in the data model or the service definition.
  Model Changes: If changes were made to the data model (like removing key properties) without updating the service definition, this error can occur.
  
  
  Solution:
  
  
  Define Key Properties:
  
  Open the Data Model (e.g., in SEGW transaction).
  Navigate to the entity type that is causing the