In a managed package, on a Custom object, I have a lookup to contacts. This lookup simply returns all contacts from an org.
Now I have a use case, where a client of ours (which has the package installed) would like to limit the results the lookup has access to, to a certain record type of contacts. Is there a way to define a lookup filter outside of a managed package, to a lookup inside a managed package? I don't want to go and add a filter to my lookup inside the managed package, because some clients won't have any record types on contact.
Doesn't have to be a solution with a clean working method, can also have some hacking involved if needed.