Multiple publication orders can be added to the same requisition in Workday: ADD a separate line per invoice and put EACH ORDER # in the MEMO to Suppliers along with the Worktags- (be sure to match the lines Worktags to those put in MEMO to Suppliers). Combing orders with the same Worktags on the same requisition makes for easier tracking.
Be sure to put in a thorough Business Purpose, not just “ordering publications”- remember to justify the WHY.