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"Tool is invalid" on LTI Canvas grade book learner assignment export with institutional instances (appears sporadically from our observation).

Question asked by Ben Levy on Jan 22, 2018
Latest reply on May 10, 2018 by

With the free Canvas and a number of institutional instances we are seeing in response to LTI tool leaner assignment grade book export a response of:

Error: {"message":"Tool is invalid\n[EID_#############]"}

There are many LTI export events that export successfully (before and after) and it seems to have happened more frequently in the last month. The api end point appears consistent and the score object is not different. So much so, that during LTI export of a free assignment, we have seen it fail initially and then, upon retry, we have seen it succeed with an identical request and no known configuration changes to the LTI Tool.


We do not get any more details and haven't been able to find the source of the Error message response. Has anyone run into this? Is there a way to look up the EID numbers we have to get a full error message?