How to account for intransit material?

Hi, I have an issue that I am not aware how to solve it.

We normally buy items from foreign suppliers. When the items arrives at port there is a property transfer, from supplier to us. So even when the items are not in our store, we are the owners and we have to reflect this situation in a Goods in transit account.

When the items finally arrives to the store, we have to enter another journal debiting the correct item account. and crediting the goods  in transit account.

We are using 12.1.3 Inventory,  Cost management and Purchasing.  And we are using average cost. and I don't know how to make this accounting flow automatic.