When creating a merchant ("Business") in the sandbox dashboard, all the address fields are required, so we assumed that was the case for all merchants. However some merchants have signed up to our app who have some of the required fields missing (one merchant only had a value for the 'country' field).
Are these 'real' merchants, or is there a specific reason why they do not have an address?
On a related note, it would be great if the API reference would say which fields are required and which are optional.