When you have a lot of payees to manage, paying international partners can be challenging. There are many different requirements and regulations (banking, tax, security, etc.) that must be adhered to that differ significantly by country and the rules can change often depending on governmental, technological or other factors. To understand the issues around paying international partners, see the payment method reference.
In fact, Tipalti tracks over 26,000 rules and conditions to ensure that payments are executed legally and flawlessly. For businesses to manage these changing conditions would require a lot of manual effort and a payment compliance expert on staff.