OAuth2SAMLBearerAssertion for Oauth Authentication with external API

[Former Member]

Hello All,

We need to do Oauth authentication (type client grant) with external API from our UI5 application.

We configured OAuth2SAMLBearerAssertion with following attributes.

• URL - Our Resource (target API) URL
• Authentication : OAuth2SAMLBearerAssertion
• Audience : https://account.ap1.hana.ondemand.com
• Client Key : Our client key
• Token Service URL : Oauth Server URL
• Token Service User : Our client key
• Token Service Password : Client Secret

However , when we use this destination in our app , it gives us "500 - Internal Server error" (looks like HCP is not able to map the attributes correctly to get authorization token).

If anyone got this destination type working for external API , please suggest.

Thanks !!

[mrbass]

Have you resolved it? I'm having the same exact issue

[yogananda]

Hi
you refer to this blog (if it helps to solve your problem)

https://blogs.sap.com/2018/08/31/how-to-get-an-access-token-from-the-xsuaa-service-for-external-api-...

Also if this helps

https://gist.github.com/scanacs-awuttig/0f1249e279690be97c297110b37d5e10

Also its been mentioned if your using password grant_type is not supported with custom IdP, as documented at https://launchpad.support.sap.com/#/notes/2766354

[michaelrap]

Ran into same problems, any good solutions?

thx!

[quez]

I am trying doing the same and run into the same problemes. Did you ever solve this?

[former_member53617]

Hey Dijesh,

I configured that type of destination a few weeks ago, did you solve the issue?

Best regards.