I've stumbled across a problem in General Journal in which the primary key (Customer Account Number) was renamed (e.g. from C-000003 to C-DVL) and when it was created as a line in General Journal and then saved will throw a validation error "C-000003 does not exist". This happens because the financial dimension attribute has not been updated from C-000003 into C-DVL, so that everytime the LedgerJournalTrans was checked it will check C-000003 instead of C-DVL. To solve this problem, update the data in DimensionAttributeValueCombination display value from the old account number into the new one.