We’re in the early stages of building on integration between our App and Shopify that will be available to our customers and are having trouble even completing the basic OAuth workflow described in the developer docs.
The following steps all work fine:
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The user “Enables” Shopify within our app.
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This successfully triggers a redirect to the Shopify OAuth page
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The user then authorizes us, with the scopes requested.
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Shopify sends the user back to the redirect url just fine.
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We decode and verify the response, then make a call to /admin/oauth/access_token
This call fails with the response “421 Misdirected Request error”
Any insight would help