Ariba API into SAP Ui5/Fiori Apps

Hi All,

I am new to API's and was trying to access Ariba API into SAP Cloud trial version. I was able to get access to Ariba API Developer portal and got the API Key/OAuth Client Id/OAuth Secret. While I am trying to create a destination in Cloud foundry the connection is not getting established.

Connection to "XXX" established. Response returned: "401: Unauthorized"

Below is the URL I am using to connect :

https://eu.openapi.ariba.com/api/supplierdatapagination/v4/sandbox/vendorDataRequests/?realm=DSAPPXXX-T

I am using the OAuth Client Id/OAuth Secret in the user and password.

Appreciate any help on the parameters used to connect.

Thanks.

Assad