Ramp: Submit procurement request

Create, complete, and submit new, existing draft, or approved-PO change-request Ramp procurement requests. This skill owns anything not yet submitted: a new request, a draft in progress, or a change to an approved PO. Use when: 'submit a procurement request', 'start a purchase request', 'continue my draft', 'request to buy', 'create a PO request', 'change an approved PO', or 'submit a software purchase'. Do NOT use to track or approve a submitted request (use ramp-manage-procurement), or for reimbursements, bills, card expenses, vendor onboarding documents, or contract changes not tied to an approved Ramp PO.