Need to control Closure of Purchase Order on Creating GRPO or A/P Invoice

Question

Hi All,
         I have created a single Purchase Order with multiple Line Items. This Purchase Order is to be executed every Much. We do not wish to give the Vendor a new Purchase Order Every month and want to use the first Purchase Order for reference purposes.
         Can I create a GRPO or a A/P Invoice for the Whole Purchase Order without closing the Purchase Order.
         So when my service is completed I can Close the Purchase Order Manually.
         My Purchase order is Item Type.
Please Assist.

Answer 1

Hi,
    Thanks For your reply , I do not wish to do that way reason is
I am giving a PO to the vendor  for 10 QTY (this 10 QTY is for every month). so every month I will do a GRPO / A/P Invoice for 10 QTY. BUT to the Vendor i need to send a PO of only 10 QTY  (and not a PO for 10 QTY per month)
e.g.  1 Jan 2012 create PO  with doc number 1 for One Item with 10 QTY (I print it and send it to the Vendor)
         on 31 Jan 2012 i create a A/P invoice against the PO (this will close my PO)
         Again on 29 Feb 2012 i wish to create a new A/P Invoice using the Same PO Doc number as my reference (I DO NOT wish to close my PO of Doc number 1)
          I dont want to create a new PO for Feb 2012. (Reason is i want as my references with my Vendor to flow on PO number 1 and if I create a new PO for month of FEB 2012 there is a possibility of the vendor being given one more PO which i dont want to happen)
         I want all subsequent A/P invoices to use my First PO as my Based Doc.