Learn how to make the most out of the Dropbox Community here 💙!
Forum Discussion
"error_description": "missing required field \"grant_type\""
I am trying to get a sl access token with my refresh token but it gives this error. Any idea why?
Input:
{
"body": {
"grant_type": "",
"refresh_token": "<token>"
},
"contentType": "application/json",
"followRedirect": false,
"headers": [
{
"key": "Authorization",
"value": "Basic <key>"
}
],
"method": "POST",
"timeoutSeconds": 5,
"url": "https://api.dropbox.com/oauth2/token"
}
Output:
{
"error": {
"canCatch": true,
"canRetry": true,
"cause": "invalid response status code",
"description": "The HTTP request failed",
"error": "Flow.Step.HTTPRequest.Failed",
"metadata": {
"body": {
"error": "unsupported_grant_type",
"error_description": "missing required field \"grant_type\""
},
"headers": {
"Accept-Encoding": [
"identity,gzip"
],
"Content-Length": [
"97"
],
"Content-Security-Policy": [
"sandbox allow-forms allow-scripts"
],
"Content-Type": [
"application/json"
],
"Date": [
"Tue, 07 Nov 2023 11:58:41 GMT"
],
"Server": [
"envoy"
],
"X-Dropbox-Request-Id": [
"6857e5f3655547459b471405aef54adc"
],
"X-Dropbox-Response-Origin": [
"far_remote"
]
},
"statusCode": 400,
"statusText": "Bad Request"
}
}
}
- DB-Des
Dropbox Engineer
Hi trailtech,
We are not familiar with the esp_http_client component, but based on the error you are receiving from the API it's most likely the payload is not being formed correctly. Would it be possible for you to add logging that would allow you to visualize the full request payload before it is being sent to the Dropbox API?
Unfortunately, they don't have the API to print the HTTP request. So, you suspect the payload isn't constructed properly, specifically on the "grant_type" field, right?
Hi emretezisci,
Haha..😁 Ok, Yes, a little confusing message, maybe. Don't catch to the words. What grant type you are declaring in fact? 🧐 Nothing? 🤔 🙃 It's something required, cannot be nothing. 😉
Hope this gives direction.
Oh I think it was deducted for some reason.
{ "body": { "grant_type": "refresh_token", "refresh_token": "<token>" }, "contentType": "application/json", "followRedirect": false, "headers": [ { "key": "Authorization", "value": "Basic <key>" } ], "method": "POST", "timeoutSeconds": 5, "url": "https://api.dropbox.com/oauth2/token" }I use refresh_token.
In addition why are you using application/json encoding? It requires application/x-www-form-urlencoded POST parameters. 😉
About Dropbox API Support & Feedback
Find help with the Dropbox API from other developers.
