Using the authorization grant flow via a back-end API call

PaoloT and Hari329 I added more detail to the section in the OAuth 2.0 documentation describing how to use the API user for back-end calls with OAuth 2.0.

Hi ,

Thanks a lot for clarifications and updating documentation. Below is summary of our understanding :

1. Obtaining access and refresh key is one time process which can be achieved by manual log in process.
2. Once we obtain these keys using this manual log in process , refresh key can be used for subsequent calls for retrieving data as refresh key will never expire.

Please correct me if any one if above statement is wrong.

I have tried to obtain access and refresh tokens in below way :

1. Accessed our community site
2. Loged in using Sign In option available

1. Used my credentials which were granted with API-only permissions to sign in. Below is screenshot after sign in :

1. I couldn’t see any option/link to retrieve access and refresh tokens.

Could you please correct me If I am doing wrong process here ? And also please point me from where I can request for access and refresh token.

And also as per documentation (Request authorization section of - http://community.lithium.com/t5/Community-API-v2/OAuth-2-0-authorization-grant-flow/ta-p/138402#getAuthorizationcode), I have tried below process to retrieve authorization code :

https://www.rbs-communities.co.uk/auth/oauth2/authorize?client_id=wPfOkT3FhtL6ZZTFCzWGajoUXC4hUbtAtF1h/Y4ck8w=&response_type=code&redirect_uri=www.rbs-communities.co.uk/getaccesstoken

But seeing below error :

Its mentioned that he redirect_uri used in the authorization request must match the callback URL defined for the community. Who will be providing this ?

I'm experiencing pretty much the same issue with a similar error page but a slightly different code.  

I submit this

http://communities-lithiumstage.sas.com/auth/oauth2/authorize?client_id=<client-id>=&response_type=code&redirect_uri=http://communities-lithiumstage.sas.com/getaccesstoken

An Unexpected Error has occurred. - SAS Support Communities

For anyone experiencing the "An Unexpected Error has occurred", please double check that your query string values are URL encoded. client_id and redirect_uri both contain characters that need to be encoded.

If you’re testing outside of a coding environment, this tool might be handy:

http://meyerweb.com/eric/tools/dencoder/