I tried deleting appointment types from appointment module
This seems strange–these are all appointment types that you have created?
No actually, they are all the default appointment types that were originally there.
Ah, as provided by the reference application? @darius I’m guessing the reference app adds all these at every startup? Is there a way to work around this?
Yes, the reference application automatically includes these appointment types. (but this is a bit of a bug.)
I created a JIRA issue for this bug (it’s a curated intro ticket; if someone does this very soon it could be included in the imminent Reference Application 2.4 release).