Dear
We have an LMS with an LTI PRO integration where each classroom allows creating 1 or X Zoom meetings through the iframe that integrates this tool. We are trying to find a relationship between the classrooms and all the meetings that could have been created to obtain customized reports combined with our LMS data.
The iframe that LTI PRO creates a form POST that contains an input with the name “context_id”, which is the union ID between our LMS and the ZOOM platform.
In the ZOOM API results, these IDs are not displayed.
Also, there is no trace of any external ID in the API. The only property is source that always return LTI PRO
We need to retrieve the context_id of a classroom of any way, but the LTI PRO doesn’t provide of any endpoint to this.
I could see another post with the same problem and doesn’t have any solution:
Post link to same problem
There is any solution? Can somebody help us please? 
Thanks in advance.
Regards