Assistance on Purchase Requisition

Hi All,

I would like to take your assistance for the PR process. I am looking for the tools which is on the SR form through which we create the PR. 

I have to do the following cycle to accomplish the same

• Enable the Purchase requisition option on the SR form
• Then create the Purchase requisition. Capture the Service request number in the flex field.
• Once purchase requisition is approved.
• Create the Purchase order.
• The item selected in the requisition is of 'expense' type.
• Once PO is approved, create the GRN. (Good Receipt note)

Appreciate your assistance on the same.