Message type: E = Error
Message class:  /IWBEP/CM_V4_MED -  
Message number: 204
Message text: OnDelete action '&1' is not allowed for navigation property '&2'
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The SAP error message /IWBEP/CM_V4_MED204 typically occurs in the context of OData services when there is an attempt to perform a delete operation on a navigation property that does not support deletion. This error is part of the SAP Gateway framework and is related to the handling of entity relationships in OData services.
Cause: The error message indicates that you are trying to delete a related entity (navigation property) that is not allowed to be deleted. This can happen for several reasons: Navigation Property Restrictions: The navigation property you are trying to delete may be defined in such a way that it does not allow deletion. For example, it could be a one-to-many relationship where the parent entity cannot be deleted without first deleting the child entities. Service Definition: The OData service may not be configured to allow deletion of the specified navigation property. This could be due to the way the service is
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