Oh... sorry... I totally misread your question...
The best thing you can do is to touch base with your Primavera instructor directly and ask her/him for their thoughts.
If you cannot do that, then open the CCRS Handbook
www.project-management-prepcast.com/ccrshb
, review the requirements for PDUs in there, and then analyze/compare the course against what PMI writes. You attended the course and you know best what you learned.
Personally -- and just guessing exclusively based on the words "Primavera P6 scheduling course" -- I would assume that you CAN indeed claim this course under "technical project management".
And don't let the fact that their name does not pop up distract you. For example, you CAN claim TED Talks for PDUs as well, and they don't pop up either. There are millions of providers out there that are not listed but you can still claim courses from them.
Until Next Time,
Cornelius Fichtner, PMP, CSM
President, OSP International LLC