Directions · VFS errors · 403203
A less common variant that VFS does not document. In our experience it does not behave like the address-level blocks it resembles, and it usually passes on a normal retry a little later.
VFS does not document this variant, and it does not behave consistently enough for us to state a single cause.
It shares wording with 403201 and 403102, which leads people to treat it as an address block. We deliberately do not: in our own records it does not behave the same way, and treating it as a ban leads to abandoning a connection that was never blocked.
If you take one thing from this page: matching the leading digits of these codes is misleading. 403201, 403102 and 403203 look alike and mean different things.
Most of these codes are survivable. What turns a pause into a real problem is the reaction to it.
Error codes aside, the usual reason people are on this page is that they have been refreshing the calendar for weeks. That is the thing these limits are reacting to, and it rarely works: on the routes we watch, an opening appears roughly once in several hundred checks, at no predictable hour.
We watch it instead, and book the moment one appears. You pay after the appointment is confirmed — if nothing opens, there is nothing to pay.