MIGO Fi document

Hi

I have created a purchase order.

I have posted goods receipt in MIGO,and i tried to view FI document.

The document generated 3 line items.

Debit to Inventory account and credit to GR/IR clearing account and other transaction gains account.

Why this happens?whats wrong in the assignment of accounts?

I am using standard chart of accounts and all the accounts are already assigned.

Thanks and Regards,

Deepthi.