From Purchase requisition to Purchase Order

Dear All,

I'm new to SAP, and I'm testing some MM process.

I have Created a Purchase requisition trrough Transaction : ME51N

I have Created a Request for Quotation with reference to my Purchase Requisition (to 3 vendors) through  Transaction : ME41

I have Created provided prices for each of the three RFQ through transaction : ME47

I have shown the price comparison among the three vendors and check rejection codes for the items that should not be considered.

I have created a Purchase Order through with reference the RFQ I shoosed through transaction ME21N

When go back to my Purchase requisition ME53N, I can see each Line item the Purchase Order that was created as well as the RFQ that I created, all linked to my Purchase Requisition.

My problem now is :

1. I would like not see the RFQ (both those rejected and the ones I accepted) appearing when I create new Purchase orders. I only want to see RFQ where no Purchase Order have been created. This is to avoid users to make mistakes of creating Line Items from wrong (or outdated) RFQ.

2. Is there any report that could show me the line Item, the PR Number, the RFQ it was selected from, the Order Number ?

Best regards,