My question may seems obvious or stupid, but I don't figure out how to get the fields tagged as "VALUE_OPTIONAL" in the response of the moodle webservices.
For instance, I want to get the field
description string Optionnel //activity description
in the web service core_course_get_contents but I can't get it in the response.
Is it some part of the configuration of moodle or do I need to specify something in my call (I use XMLRPC) ?
I use a lot of webservice for my application and everything works well, except those unreachable fields.