# Purchase Orders Purchase Orders (POs) and deal memos provide a formal commitment step between budgeting an expense and posting it to a vendor for invoicing. Rather than going directly from a budget expense line to a posted state, the PO workflow lets you issue a commitment document to a vendor — confirming scope, rate, and terms — before billing begins. <!-- NOTE: PO and deal memo workflow is in active development. This doc will be expanded with full workflow documentation once the feature is finalized. The sections below reflect the intended design. --> --- ## The Role of POs in the AP Workflow The standard posting workflow moves an expense line from the budget directly to the vendor portal for invoicing. POs insert a structured step before that: 1. Budget expense line is committed via a PO or deal memo 2. Vendor receives and acknowledges the commitment 3. Expense line moves to posted state 4. Vendor invoices against posted lines as usual This gives organizations a paper trail of committed expenses before any invoicing occurs — important for larger productions, agency workflows, or any situation where formal vendor agreements are required before work begins. --- ## Full Documentation Full workflow documentation for POs and deal memos will be added here once the feature is finalized. In the meantime, contact PAI support if you have questions about the PO workflow.