Sage 300

Am gettingthe below errors What might cause this to happen? Wjhat can i do to fix this? Purchase Order Line: PO0311816, 10, 700511-IRGP E: Item number does not exist. E: Unit of measure EA does not exist. Purchase Order Line: PO0311816, 14, 9533266…

While trying to restore a SQL server backup for one of our Sage databases, the process returned a restore error. Upon research i found out that the DB may have been corrupted. What can be done to recover from this? Priti