We are trying to work with AWS ACM in us-east-1 region to automate the things. Trying to follow their doco and not getting too far with minimal ideas where to turn.
We get 404 and error <UnknownOperationException/>
for everything that we send at it, even changing endpoint doesn't help.
Our API requests are validated using AWS4-HMAC-SHA256 as they request.
Hope we are missing something obvious, or, if someone has some experience with this specific endpoint can lend some pointers - thank-you so much in advance!