When a non-nullable Guid is returned from an API endpoint, it returns to the client as a stringified default Guid, which is full of 0s. This value is not falsy, so JavaScript clients would have to otherwise explicitly check for a default Guid value as a string in order to check for failure. Instead, Make the Guid nullable so that it can return null on failure, which the JS client would natively understand as falsy.
When a non-nullable
Guidis returned from an API endpoint, it returns to the client as a stringified defaultGuid, which is full of 0s. This value is not falsy, so JavaScript clients would have to otherwise explicitly check for a defaultGuidvalue as a string in order to check for failure. Instead, Make theGuidnullable so that it can returnnullon failure, which the JS client would natively understand as falsy.