What is the HTTP response code for failed HTTP Delete operation?
The response code for a delete call can be any of the following :
DELETE /api/book/122
- The server successfully processed the request, but is not returning any content204 No Content
DELETE /api/book/122
- Resource does not exist404 Not Found
DELETE /api/book/122
- Resource already deleted410 Gone
DELETE /api/book/122
- Users does not have permission403 Forbidden
DELETE /api/book/122
- Method Not Allowed405 Method Not Allowed
DELETE /api/book/122
- Conflict (User can resolve the conflict and delete)409 Conflict
In your case 404 is apt.
Yes, it would be 404.
In general it will be a 400 series error if the request is wrong somehow, and a 500 series error if something goes awry on the server.