Invalid ID
I can't export Flex elements to QuickBooks. I get this error:
ERROR CODE:2030, ERROR MESSAGE:Invalid ID, ERROR DETAIL:Id should be a valid number. Supplied value:[actual value sent], MORE ERROR DETAIL:[additional information which can point to the location of the invalid ID]
Solution
This problem can be seen when a user moves from QuickBooks Desktop to QuickBooks Online. Financial documents originally exported from QuickBooks Desktop must be manually marked as paid in QuickBooks Online. Future invoices and payments will match without issue.