Check pr_work table if entry already exists?
Lets say when we are working on a Work Object, we have to be notified that an Entry say Bill # already exists in the system. We have to check both the Pega Internal DB and also external Databases to make sure that if user tries to enter an existing Bill number in either internal or external db, an error should be shown that it already exists.
What approach for internal db and external db should i be looking for?
Thanks in advance.