It's available out of box if you enabled multi warehouses and multi locations.

You already create 2 receipts operations in inventory (Mycompany : Receipts WH1 and MyCompnay: receipts WH2). 

In Mycompany : Receipts WH1  you will set the Default Destination Location to your warehouse e.g WH1/stock.

In Mycompany : Receipts WH2  you will set the Default Destination Location to your warehouse e.g WH2/stock.

Then in ​Requests for Quotation, Deliveries and invoices tab, you will be able to select the operation from Delivery to fields as you can see from the below screenshot:

Delivery To

Update Answer:

By the way shipping address used only for customers.

In Odoo 12, as per help on the field it will only used for drop ship (when you want the vendor to ship to customer) and you said it will not work with you. If you want to purchase for your company so your company address in showing in PO but not as shipping address.

dest_address_id = fields.Many2one('res.partner', string='Drop Ship Address', states=READONLY_STATES,

help="Put an address if you want to deliver directly from the vendor to the customer. "

"Otherwise, keep empty to deliver to your own company.")

Other solution: since you are already configured two receipt operations and already determine the default destination location for each operation and you want to show it in the printed PO, so you can show the Default Destination Location in the report, you have to inherit the purchase order report and show field :

o.picking_type_id.default_location_dest_id.display_name

From this o.picking_type_id.default_location_dest_id you can access all location fields and from it you can get Partner field/whse fields.

This field default_location_dest_id is from stock.location so you can enable developer mode -> settings -> technical -> Database structure -> models and search for stock.location and you will get all fields.

For example, if set the owner in you location so you can get it using partner_id fields and from it you can get the address

o.picking_type_id.default_location_dest_id.partner_id

Hope this will help you.

Hi Waleed, 

Thank you for your reply. 

The problem is that actual shipping address is not showing purchase order when I print it.

From the report view there is this code:

<t t-if="o.dest_address_id">
<t t-set="information_block">
<strong>Shipping address:</strong>
<div t-if="o.dest_address_id">
<div t-field="o.dest_address_id" t-options="{"widget": "contact", "fields": ["address", "name", "phone"], "no_marker": True, "phone_icons": True}" name="purchase_shipping_address"/>
</div> </t>
</t>

where dest_address_id is false, if I want goods to be delivered in one of my warehouse.

I dig and found following in the "Fields view get": 

<field name="dest_address_id" attrs="{'invisible': [('default_location_dest_id_usage', '!=', 'customer')], 'required': [('default_location_dest_id_usage', '=', 'customer')]}" can_create="true" can_write="true" modifiers="{'invisible':[['default_location_dest_id_usage','!=','customer']],'readonly':[['state','in',['purchase','done','cancel']]],'required':[['default_location_dest_id_usage','=','customer']]}"/>

seems either where should be way to customize it from admin, or I have modify this piece of code. but not sure how i can do it.

p.s. I am sorry I am kind of new here :)

thanks,

N