GST GL Entry Creation.

Hi All,
I need help in GST GL entry creation with transfer order shipment.
I am creating gen journal line through transfer shipment codeunit. i debug and got my entries creating accurately in 12 cu but after passing that  i m getting error of gl entry already exists from cu 410(Update analysis view)

after few changes now my system got stuck on cu 410 i dont know why cu 410 interrupting me. 
Any idea how to resolve it.

Nav-2009 sp1