Right - in my case the accdb referenced H:\some\where\foobar.mdb
But loading the accdb (in my project or dbeaver) does not show any error.
Therefore I've requested the exception on such case.
The second parameter is to solve the issue e.g remap=H:\some\where\foobar.mdb;C:\my_local_foobar.mdb)
Not sure if this is possible but would be nice.