iProcurement Store Item (Catalog) Requisition automatically created as a Purchase Order - how to swi

I have set up Quotations and Blanket Agreements for an Item and it appears in my Catalog Store in iProcurement, which is good. 

But when I raise a Requisition from either the BPA or Quote, the PO is automatically generated, I do not want this.

I have no Approved Supplier Lists setup and the following Profiles set:

PO: Automatic Document Sourcing      = None
PO: Allow Autocreation of Oracle Sourcing Documents     = No
PO: Allow Auto-generate Sourcing Rules     =  No

Can anyone advise why I am still generating a PO and how can I turn this off?

Thanks

Gary