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Canvas Grade passback not getting authenticated

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We are implemeting Canvas grade passback by posing to lis_outcome_service_url received while launching the assignment.

I have generated OAuth signature using all the parameter we receive except 'oauth_signature' but still not getting authorized and get response as 319583_canvas-error.PNG

Here is the xml I am using

<?xml version = "1.0" encoding = "UTF-8"?><imsx_POXEnvelopeRequest xmlns="">
</resultScore> <!-- Added element -->

When I call this API through POSTMAN it works like a charm. Something is wrong when i Try to do with PHP laravel.

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Thanks Robbie, my issue is resolved and grade passback API is working fine.

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3 Replies
Community Coach
Community Coach

 @nayana_rane , greetings! I've shared your question with the Canvas Developers‌ group in the Community to see if they can help. They are the ones who work a lot with the Canvas API and coding/programming, so hopefully, they can assist! 


Community Coach
Community Coach

 @nayana_rane ,

I apologize for your questions sitting in the community so long without a response.  It looks like you have stumped the Canvas Community.


Were you able to find an answer to your question? I am going to go ahead and mark this question as answered because there hasn't been any more activity in a while so I assume that you have the information that you need. If you still have a question about this or if you have information that you would like to share with the community, by all means, please do come back and leave a comment.  Also, if this question has been answered by one of the previous replies, please feel free to mark that answer as correct.



Thanks Robbie, my issue is resolved and grade passback API is working fine.

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