Message type: E = Error
Message class:  /IWBEP/CM_V4_ANNO -  
Message number: 016
Message text: Namespace for type &1 may not be initial
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The SAP error message /IWBEP/CM_V4_ANNO016 indicates that there is an issue with the namespace for a type in your OData service. Specifically, the error states that the namespace for the type specified by &1 cannot be initial (i.e., it cannot be empty). This typically occurs when you are trying to define an entity type or a complex type in your OData service without providing a valid namespace.
Cause: Missing Namespace: The type definition in your OData service does not have a namespace defined, which is required for proper identification and organization of types. Incorrect Configuration: The OData service might be incorrectly configured, leading to the absence of a namespace in the type definition. Model Definition Issues: There may be issues in the way the data model is defined, such as missing annotations or incorrect references.
Solution: Define a Namespace: Ensure that all entity types and complex types in your OData service have a valid namespace defined.
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