COAP server showing method not allowed(405) for unavailable resource where as it should be not found (404)

[manlandis]

Hi,
coap server in python is running with resource name "abcd" and it is listening on some specific port.
When POST request is send using other name of resource with name "wxyz", server showing METHOD_NOT_ALLOWED where as expectation is it should show "NOT_FOUND"(404) code.

Please comment on observation.
Thanks!