“error”: “unsupported_grant_type”, “error_description”: “Grant Type is NULL” Postman with Paypal

问题

I am following the instruction on how to get an access token from Paypal using Postman.

I keep on getting this error message:

"error": "unsupported_grant_type", "error_description": "Grant Type is NULL"

Here is my postman setting:

Url: https://api.sandbox.paypal.com/v1/oauth2/token

Authrization: Username: client_id... Password: secret...

Header: Content-Type -> application/x-www-form-urlencoded

body: form-urlencoded

key: grant_type
value: client_credentials

回答1:

Follow the screenshots. I guess your problem in flow when you insert grant_type in body.

来源：https://stackoverflow.com/questions/53364126/error-unsupported-grant-type-error-description-grant-type-is-null-pos