DataParsingError on refresh_token

[vaxas59775]

Hello, I'm trying to refresh my expired token by following Renew an Access Token section in the https://developer.sage.com/accounting/guides/authenticating/authentication/ . But I'm getting  DataParsingError error.
My request response log is:

~~~ REQUEST ~~~
POST  /token  HTTP/1.1
HOST   : oauth.accounting.sage.com
HEADERS:
	Content-Type: application/json
BODY   :
{
   "client_id": "****",
   "client_secret": "****",
   "grant_type": "refresh_token",
   "refresh_token": "****"
}
------------------------------------------------------------------------------
~~~ RESPONSE ~~~
STATUS       : 400 Bad Request
HEADERS      :
	Connection: keep-alive
	Content-Length: 125
	Content-Type: application/json;charset=UTF-8
	... (trimmed cloudfront headers)
	X-Cache: Error from cloudfront
BODY         :
{
   "$severity": "error",
   "$dataCode": "DataParsingError",
   "$message": "The data you sent could not be processed.",
   "$source": "Proxy"
}
==============================================================================

Where do I'm wrong?

[Steel, Mark]

Hi, thanks for your question.

The attached image relates to the information provided in our oAuth guide found at https://developer.sage.com/accounting/guides/authenticating/authentication/

It appears you're missing Content-Type: application/x-www-form-urlencoded from the request header.

Thanks

Mark

[vaxas59775]

It fixed when send url_encoded refresh_token