Generating Inbound delivery based on Vendor Confirmation for Purchase order

Is there a way to create Inbound deliveries based on Vendor confirmation for a purchase order.

Here is the complete scenario.

Buyer Creates the PO for qty 100 and Date August 29

Vendor Confirms that he can supply a qty of 50 for August 29 and remaining 50 for Sep15th

Based on vendor confirmation, Buyer creates 2 vendor confirmations (AB) to match with the data received from Buyer, without modifing the PO.

Requirement:

Inbound deliveries should get created based on the vendor confirmation.

As MRP looks at Inbound delivery for Planning purposes once they are available, Inbound delivery should match with vendor confirmation data.

Is it possible to get this requirement met with standard config available in SAP.