Nexus provides an API operation that returns a list of PSPs in a specific country along with their corresponding Financial Institution Identifications:
GET /countries/{countryCode}/fin-insts/psps
This can be used to generate a drop-down <select> menu item that allows the user to select the name of the PSP rather than entering the BIC manually.
This is useful for countries (such as the Philippines) that require the financial institution to be identified when using a proxy, or for countries (such as Singapore) where the convention is for the Recipient to share the full name of their PSP rather than the BIC.
For usability, PSP app developers should enable the type-ahead feature that allows the user to start typing the PSP name to filter the list.