On the RS as 'sa' do
sysadmin log_first_tran, <ReplicateDS>, <ReplicateDB>
Then go to (e)RSSD and run rs_helpexception to get details of the latest transaction logged
Do following :
exec rs_helpexception <TXN>, 'v'
It will show the details of transaction being attempted at RDS+RDB
Skipping a transaction should be your last resort !!
On RDS + RDB try and fix what is causing the issue and then resume without skipping
HTH
Avinash