How to create a requisition from i-proc sourcing against a contract agreement?

Hi,

1. created contract purchase agreement

2. Setup the price list for the item

3. Setup the ASL for the item and referenced the CPA number in source doument region.

4. Created Sourcing rule for the item.

I have no issues in defaulting sourcing information (supplier name, site name, source document number) when creating a requisition in core apps forms but how to setup the same feature in i-procurement?

I would like to create a requisition from i-proc for this item and I expect that should reference my contract number automatically.

I setup the smart form but I don't see a field called item number there so when creating a requisiton from i-proc I don't see the item number field at all.