Refresh token not working when generated externally

[#1]

HI

I need to use accesstoken and refreshtoken externally. I call ServiceCallout to get both and use GenerateAccessToken to set accessToken and refreshToken. So far so good.

But when I use RefreshAccessToken policy with correct refresh token it still shows error that incorrect refresh token. I have tried both true and false for <ReuseRefreshToken>true</ReuseRefreshToken>. Im using grant_type as refresh_token

Thanks Vi