Hi,
First there is one major difference between payment terms and billing plan.
Payment terms will come into effect once billing is done, based on the conditions of payment terms system decides whether a certain line item is not due or overdue.
Billing plan on the other hand decides when to bill the first installment and when to bill second installment and final payment etc.
For example:
for a order with billing plan has total value of INR 1000
date Mile stone percentage Amount
21.10.2011 Advance 10% 100
31.10.2011 installation 30 % 300
15.11.2011 Handing over 40 % 400
30.11.2011 Final invoice 20% 200
System will create 4 invoices according to billing plan.
Once the bill is created according to payment terms FBL5n will show the status as not due/ overdue
Hope this helps.
Regards,
Sharan