Question: When I try to save a new invoice, an error message 'Invalid account no' prompted? why I couldn't save a new invoice?
Version: 1.8 / 1.9 / 2.0
Possible Reason:
1. Sales Account No is not defined.
Solution:
There are 4 places you may assign G/L account codes:
1. Tools > Options > G/L Default Account
2. Stock > Stock Group Maintenance (to be used in Stock Item Maintenance)
3.General Maintenance > Posting Account Group Maintenance (to be used in Debtor Maintenance)
4.During bill transaction.
--Source from AutoCount Wiki --