invalid token exchange authorization codes?

[Cyril]

So 99% of the time my token exchange process works just fine, but occasionally Strava responds with a "Bad Request" message.

I've confirmed that each authorization request is accepted, and I receive a query string formatted as expected, looking like:

"code":"012345ab6c7d89e48d7e92a0e381024deb1f0a7b",
"scope":"activity:read_all,activity:write,profile:read_all,read,read_all"

but occasionally the POST call to https://www.strava.com/oauth/token receives this response:

{ "message":"Bad Request",
  "errors": [{
    "resource":"AuthorizationCode",
    "field":"code",
    "code":"invalid"
  }]
}

This issue is so intermittent that I can't reproduce it, but I'm sure I only try to use the short-lived code once...

Any ideas what might be going wrong? 

[Elliott · Accepted solution]

Hi Cyril, 

If you've taken all of the steps to troubleshoot what could have caused the Bad Request error and are still experiencing issues, you can always reach out to us at developers@strava.com and we can investigate the issue further and see if there's anything we can identify on our side. 

- Elliott