= SQLSETPROP(lnConnHandle, 'Transactions', 2) && Manual transactions = SQLEXEC(lnConnHandle, "INSERT INTO CUSTOMER (Customer_id, Barcode...); VALUES (?m.nTOTCUST, ?m.cBarcode...)") = SQLDISCONNECT(lnConnHandle)Other way is to remove inserted fields one by one to find which caused the problem.