If a BPO is issued to a "network" company but, then we receive invoices from multiple locations within their network, is this allowable? Or will we need to issue separate BPOs to each location (I assume it depends on whether they share a TIN?)

Much like Ariba, suppliers can determine how a company or different areas of a company transact with the UW. Some are large companies with a single procurement intake point and single invoicing or Accounts Receivable team, while others are divided by mailing locations or divisions, and whether they choose to use the legal entity Taxpayer ID Number (TIN) or a subsidiary TIN.