Guys, I am using .net for Inserting Journal Entries into the ODOO

I have attached the full code to do so. 

I am able to successfully create the account.move entries But whenever I am creating the account.move.line, I am getting the following issue

Server returned a fault exception: [2] Cannot create unbalanced journal entry.

Please help me to solve this issue

The code can be downloaded at 

https://www.dropbox.com/s/k5bh4ff08ggnhq9/ODOO.zip?dl=0