Posting new Woocommerce Sales Data in subdomain

Hi
I will need some help in posting woocommerce orders into woocommerce stores in corresponding subdomains.

Process:
1) add a drop down in checkout page under Address, called 'Area'. Field for 'Area' and its corresponding subdomain will be set in wp-admin settings page

2) According to the area selected, the function will copy the sales data to the corresponding subdomain(stated in settings page as mentioned above). For example, if Area A is selected then sales data will be duplicated in areaA.main.com(stated in settings page as mentioned above) If area B is selected, then its areaB.main.com(stated in settings page as mentioned above).

3) Functions will take effect on checkout where order data is recorded in main site (by default) and also in corresponding subdomain (by new function)

p.s - The subdomains will have exact product codes and data as the main site so data will have no issues being displayed in subdomain woo store.

The function will generally copy the sales data into relevant subdomain on checkout as set in the settings page.