Working with Magento CE 1.9.

I'm attempting to make use of Magento's API however I keep running into the same error in my response: oauth_problem=parameter_absent&oauth_parameters_absent=oauth_callback

I've referenced Magento's documentation and in order to get this "unauthorized request token", they claim the oauth_callback param "should be present in the Authorization header".


I've used multiple REST clients (especially Postman) and random HTTP Request generators that feature OAuth authentication and none of them seem to posess the means to include the oauth_callback param in the Authorization header. I've also attempted to manually include the oauth_callback param into my Authorization header but then it breaks the signature or has other, similar errors.

I've tried POST (what is recommended by Magento's doc), GET (what I've actually seen others using for this step - believe it or not) and I've attempted to tuck the oauth_callback into header, body and parameters without success.

So then, where should the oauth_callback be included if adhering to Magento's documentation for REST API usage?

1 Answer 1


I ran into this same problem yesterday, and it was hard enough to figure out that I wrote an entire blog post to answer your question with code samples and everything needed to get through the auth steps. Hope it at least helps.

How to get an auth token from Magento REST API 1.x

  • Welcome to Magento SE. If you post links in an answer, please make sure that the answer is still valuable, if the link becomes dead at some time: For example, summarize the linked article or quote the relevant parts. This is important because StackExchange aims to be a knowledge database, not a support forum that helps one person right now. Future visitors should still benefit from the questions and answers. Oct 24, 2016 at 19:01

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