So I followed these docs
To try and create an order through postman
In the response, I get some HTML with a link that asks me to authenticate and then goes to error
I tried fetch orders request and that worked fine. I have tried changing inputs and using shopify example inputs.
Not sure what's going on here.
Solved! Go to the solution
This is an accepted solution.
If you've verified the API credentials are okay, then it's likely due to Postman sending client-side cookies with the API request. You need to clear those out and disable that setting option.