Error: Oauth error invalid_request: The authorization code was not found or was already used

Hi,

I am trying to install our public app on a Shopify store and the code returned in the redirect URL is used for generating the access token. But our call to Shopify API for generating access token is always resulting in the following error: “oauth error invalid request the authorization code was not found or already used”

We did this exercise of installing, uninstalling and reinstalling with our Shopify store owner, but kept getting the same error. How do we get this error resolved and be able to generate the Shopify access token? Please help.

Regards, Sharad

[sharad225]

Hello to all who contributed here! With all those inputs I understood that the problem might be that the generated code is being used before actually being used for generating the access token. I called my customer and asked him to share screen to see he is not doing anything which is making the code getting used before we get to use it.

He installed our app and then he pressed the browser back button and then I realised this action of his is actually making the code go back to his store and in turn getting used and this is what the error said when we tried to use it for generating the access token. I stopped him from hitting the browser back button and asked him to send over the code to us. We hit the access token generating API and we got the access token.

Thanks to all who helped me see into the problem and helped me in resolution.

Kind Regards, sharad

[hashhesh]

Hello to all who contributed here! With all those inputs I understood that the problem might be that the generated code is being used before actually being used for generating the access token. I called my customer and asked him to share screen to see he is not doing anything which is making the code getting used before we get to use it.

He installed our app and then he pressed the browser back button and then I realised this action of his is actually making the code go back to his store and in turn getting used and this is what the error said when we tried to use it for generating the access token. I stopped him from hitting the browser back button and asked him to send over the code to us. We hit the access token generating API and we got the access token.

Thanks to all who helped me see into the problem and helped me in resolution.

Kind Regards, sharad

@sharad225 , many thanks sharad, this explanation helped a lot