as per today, 27.04.2022, I do not see any documentation related to the PCS release 9.1R15.0 (which has been released last 21st of april 2022). Under https://www.ivanti.com/support/product-documentation I can see documentation up to PCS 9.1R14.
Could you please share details about when it will be available? Or if already available share the link?
I hope to also get an answer to this, and there also appears to be some extra steps along with this update as per the KB article listed on the downloads page just for reference.
Thanks for the post. Saves me doing it!