Use the
MergeCart
parameter in any cart operation request except
CartClear
MergeCart=True&
The value, "True," specifies that items in a remote shopping cart
will be added to a customer's local shopping cart when the customer elects
to purchase.the items in their remote shopping cart. The default value, False,
means that the items in the remote shopping cart are sent directly into the
Order Pipeline instead of being added to a local shopping cart.
This parameter is only valid in the US locale. In non-US locales, the
parameter is invalid but the request works as though the parameter were true.