\Samples\Authentication\StandAloneHttpSignature.cs is what I based my
authentication on as well, and it worked on sandbox no issueFor me, the
issue was because the development sandbox environment supported all
operations and endpoints that I personal...
Hey there, did you ever get a response from them? I am having the same
issue right now. New key that will not work. This was the response I
got:{ "submitTimeUtc": "2023-06-28T16:57:28.902Z", "status":
"FORBIDDEN", "reason": "INVALID_DATA", "message":...
