# WhyI am Getting invalid URl even with default postman callback

**URL:** <https://devforum.zoom.us/t/whyi-am-getting-invalid-url-even-with-default-postman-callback/90159>\
**Category:** Authentication\
**Created:** [June 14, 2023, 2:01pm UTC](https://devforum.zoom.us/t/whyi-am-getting-invalid-url-even-with-default-postman-callback/90159 "2023-06-14T14:01:15Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![anupam](https://avatars.discourse-cdn.com/v4/letter/a/9de053/32.png) [@anupam](https://devforum.zoom.us/u/anupam)\
**Post date:** [June 14, 2023, 2:01pm UTC](https://devforum.zoom.us/t/whyi-am-getting-invalid-url-even-with-default-postman-callback/90159/1 "2023-06-14T14:01:16Z")

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Invalid redirect: [https://oauth.pstmn.io/v1/callback](https://oauth.pstmn.io/v1/callback) (4,700)

I tried to get token in postman i am getting this. any Guess!!!

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**Author:** ![michael.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/michael.zoom/32/37213_2.png) [@michael.zoom](https://devforum.zoom.us/u/michael.zoom)\
**Post date:** [June 23, 2023, 4:17pm UTC](https://devforum.zoom.us/t/whyi-am-getting-invalid-url-even-with-default-postman-callback/90159/2 "2023-06-23T16:17:47Z")

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Hi @anupam , has the postman domain been added to the app’s allow list?

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**Author:** ![anupam](https://avatars.discourse-cdn.com/v4/letter/a/9de053/32.png) [@anupam](https://devforum.zoom.us/u/anupam)\
**Post date:** [June 27, 2023, 5:47pm UTC](https://devforum.zoom.us/t/whyi-am-getting-invalid-url-even-with-default-postman-callback/90159/3 "2023-06-27T17:47:34Z")

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Sorry for viewing late i was able to solve it in popst man hence started intergrating the same for my app.  
Now i am getting code but to get the token i get invalid URL

After I get aith code i pass the same to get token  
here is the java code from my app  
String code = request.getParameter(“code”);  
String tokenurl = “[https://zoom.us/oauth/token?grant\_type=authorization\_code&code=](https://zoom.us/oauth/token?grant_type=authorization_code&code=)” + code + “&redirect\_uri=[https://dev.gsmls.com/member/common/include/trainingauth.jsp](https://dev.gsmls.com/member/common/include/trainingauth.jsp)”;