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Just a wild guess, but the id of the answer has a decimal point. This seems inappropriate. ... View more

It looks like the answer object has an issue:  the name of the answer is "answer_text" not "text". ... View more

Not sure if this helps or not, as I'm very new to Canvas, and am not familiar with practice quiz. That said, if the practice quiz requires that you start a quiz submission with the endpoint POST /api/v1/courses/:course_id/quizzes/:quiz_id/submissions, then the endpoint will return a quizSubmission object with a key named validation_token.  This token is used as a parameter to the endpoint GET /api/v1/quiz_submissions/:quiz_submission_id/questions?validation_token=:validation_token, which will then return a QuizSubmissionQuestion object with an answer key (instead of the correct key). Hope this helps. ... View more

Using the "id" of the quiz submission object did the trick.  In looking at the JSON returned from quiz submissions - {"quiz_id":216962,"id":1144880,"submission_id":8605758,...- I was using the "submission_id" and not the "id".  The documentation of the Quiz Submission object doesn't do much to explain the difference between the two. Thank you VERY much for your help! ... View more

Thanks for the quick response... To answer your questions - The test student has not taken the quiz.  However, my app is set up to 'start' a quiz automatically, if one is not already started. I've tried 3 different variations of the request to list questions in a quiz; each is a failure. courseID is 552 quizID is 216962 submissionID is 8605758 attempt is 1 Attempt 1 - no arguments for submission ID or attempt <cfhttp method="GET" url="#get( 'canvasURL' )#/api/v1/courses/#arguments.courseID#/quizzes/#arguments.quizID#/questions" result="local.result"> <cfhttpparam type="HEADER" name="Authorization" value="Bearer #arguments.access_token#" /> </cfhttp> {"status":"unauthorized","errors":[{"message":"user not authorized to perform that action"}]} The error detail is 401 Unauthorized Attempt 2 -  arguments for submission ID and attempt in the request body  <cfhttp method="GET" url="#get( 'canvasURL' )#/api/v1/courses/#arguments.courseID#/quizzes/#arguments.quizID#/questions" result="local.result"> <cfhttpparam type="HEADER" name="Authorization" value="Bearer #arguments.access_token#" /> <cfhttpparam type="BODY" name="quiz_submission_id" value="#arguments.quizSubmissionID#" /> <cfhttpparam type="BODY" name="quiz_submission_attempt" value="#arguments.quizSubmissionAttempt#" /> </cfhttp> {"status":"unauthorized","errors":[{"message":"user not authorized to perform that action"}]} The error detail is 401 Unauthorized Attempt 3 -  arguments for submission ID and attempt in the request URL <cfhttp method="GET" url="#get( 'canvasURL' )#/api/v1/courses/#arguments.courseID#/quizzes/#arguments.quizID#/questions" result="local.result"> <cfhttpparam type="HEADER" name="Authorization" value="Bearer #arguments.access_token#" /> <cfhttpparam type="URL" name="quiz_submission_id" value="#arguments.quizSubmissionID#" /> <cfhttpparam type="URL" name="quiz_submission_attempt" value="#arguments.quizSubmissionAttempt#" /> </cfhttp> {"errors":[{"message":"The specified resource does not exist."}]} The error detail is 404 Not Found   ... View more