GIT Calculation

Hi,

I need your support for one of month end issue.

GIT calculation during month.

1. they are using standard SAP PO both for Imports and local purchase

2. the liability of goods or ownership is transferred after the goods are ready to dispatch

3. in case of imports - they book based on the dockets recd. which is again a manual intervention. they want to automate

4. client take care delivery from the vendor location

I would like know if there is any standard SAP process to capture GIT value.

Thanks,