7 = 7 days net days for payment
14 = 14 days net days for payment
21 = 21 days net days for payment
30 = 30 days net days for payment
45 = 45 days net days for payment
60 = 60 days net days for payment
90 = 90 days net days for payment
0 = If payment term code is zero (0), the invoice payment net days are calculated based on the payment due date (due date - invoice date)
I = Sales Invoice (basic rule that the invoice total amount is positive value - i.e 100.00)
C = Credit Invoice (basic rule that the invoice total amount is negative value - i.e -100.00)
D = Direct Payment Invoice (contract with end-customer and the bank for electronic invoicing)
F = Financial Service Invoice (Factoring)