**Is your feature request related to a problem? Please describe.** `fastly` CLI operations failed for me in ways that made no sense (404s configuring a service that has existed for years, etc), and it took me a moment to figure out it was because I had unwittingly used the wrong token. **Describe the solution you'd like** The CLI suggests "If you believe this error is the result of a bug, please file an issue", but for example cases like "404 on `PUT /service/<service_id>`" are probably *not* returning 404 as a bug but as a result of the service not existing or provided API token not being able to manage that service. The CLI [offers basically exactly the advice that would have helped me](https://github.com/fastly/cli/blob/e5a41807d34e209e613e8a40cdf2c860756d2bd5/pkg/errors/deduce.go#L33-L40) but only for 401 and 403 responses. for some known API paths (is there an OpenAPI document for the Fastly API? I don't remember) this would definitely have helped me too. **Describe alternatives you've considered** https://github.com/fastly/cli/issues/894 describes the API's somewhat minimal 404 "Cannot find ..." as there being a bug ticket to track a fix. I imagine that the experience of operating on a service you can't access wouldn't substantially change from the API PoV - you don't want to inadvertently disclose a service ID to be valid or the scope on a token, after all - but maybe there's something there. or maybe no change to the CLI after all 🤷♀️ **Additional context** in addition to my own, this probably would have helped (or at least been the same advice Fastly offers, without the round trip) in many of the following cases: https://github.com/fastly/cli/issues/1780 https://github.com/fastly/cli/issues/1237 <-- don't know for sure since there was no followup from OP, but this was the advice to the issue-filer https://github.com/fastly/cli/issues/1256 <-- from the same author, this was the issue https://github.com/fastly/cli/issues/894 https://github.com/fastly/cli/issues/793 <-- educated guess given 404 on a fresh `fastly profile create`...