How to bypass authentication prompt when generating Access Token - Sage 200 API UK

[Lyle French]

I am trying to retrieve data from a windows service application using Sage 200 API. When authenticating there is a popup showing up to sign in. We cannot have this popup in a windows service application since it has no user interaction. Is there a workaround for this?

[Ben Smith]

Hi Lyle,

There isn't a method of bypassing the login requirement, but you can maintain the connection indefinitely by using the refresh token. When token exchange occurs you will get a new refresh token, cache it and use when the access token expires or is used. Further details: https://gb-kb.sage.com/portal/app/portlets/results/viewsolution.jsp?solutionid=210226173239343

 

Hope that helps!

 

Ben

[Yanika Abela]

Hi @Lyle French, did you manage to solve this, please? We are looking at doing the same thing.

Thanks in advance! 

[john carter]

You can utilize the OAuth 2.0 Authorization Code Grant flow. This involves manually obtaining an initial refresh token using a tool like Postman with user interaction, and then programmatically refreshing the token in your Windows service without the need for user interaction. Ensure the necessary permissions are granted to your application, and securely manage the obtained refresh token. This approach allows for seamless authentication in a non-interactive environment like a Windows service application.