? www.umba.com is a Nigerian-based online payment platform designed to make it easier and more secure for users to make and receive payments. It can be used to pay for goods and services, receive payments and make transfers within Nigeria. A sales manager in Nigeria can generate revenue by using www.umba.com to accept payments from customers. This could include payments for products and services, payments for invoices, and even set up recurring payments for subscriptions. Additionally, since www.umba.com offers a variety of payment options and currencies, sales managers can use this platform to attract and accept payments from customers in different countries, which expands their customer base and boosts their potential earnings.