Message type: E = Error
Message class:  /IWBEP/SBOD -  
Message number: 437
Message text: Set Nullable to false for Complex Property '&1&2&3'
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The SAP error message /IWBEP/SBOD437 Set Nullable to false for Complex Property '&1&2&3' typically occurs in the context of SAP Gateway and OData services when there is a mismatch in the definition of a complex type property in your OData model. This error indicates that a complex property is defined as nullable, which is not allowed in certain contexts.
Cause: Complex Property Definition: The error arises when a complex property is defined as nullable in the OData service metadata, but the system expects it to be non-nullable. This can happen if the property is part of a required entity or if the service is configured in a way that does not allow null values for complex types. Model Configuration: The issue may also stem from the way the OData model is configured in the backend. If the complex type is expected to always have a value, it should not be marked as nullable.
Solution: Adjust
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