Access key not found (Code = 40110000)


I am unable to create a connection to either Live or Paper trade API’s. I confirmed I am using the right credentials for each endpoint but keep getting and this error.

“access key verification failed : access key not found (Code = 40110000)”

Could you share your code? Minus your keys of course.

No code other than setting up postman. Would love to start coding but can’t if the API won’t let me perform a validation.

Here is a screenshot of the Postman output

and the URL I’m hitting is…

1 Like

Gotcha! The problem is you’re passing in the keys as query parameters within the URL, when actually Alpaca’s keys need to be passed in as header parameters.

So in Postman, just enter the keys under the Headers tab instead of the Params tab: