I can't see how this is done in iProcurement. I know I can ask the buyer to add the attachment to the approved PO via the buyers workcentre (and only then does the document appear while querying the PO at the header level) but why can't I add a new attachment when I am in iProc when I 'change' my requisition?
The idea is that while the changed requisition is moving through the approval workflow all approvers can view the document which supports the reason for the variance. I loathe asking the chief exec to first go and view an attachment at PO header level first before going back to his worklist and then approving the requisition somewhere else. It seems a convoluted way for approvers to view any supporting documentation.