Payment processing require us to provide beneficial ownership information. It is possible you have been using Viewpost for some time, and only now this information is being requested.
These questions are for you to answer and have no bearing on the vendor you are paying.
Because there are a variety of payment types it is possible that you receive this notice when sending some payments and not others.
If you do not answer the questions or dismiss the modal, payments will go via paper check until you do.
If you dismiss the page, please navigate to Payment>Send Payment to get the modal again.
We understand that the pertinent party may not be registered for Viewpost.
If you are not the owning party, or are unable to obtain that information, the pertinent party will need to fill out it out.