This could happen for a few reasons:

  1. If it is too close to the date of the event - the race organiser may no longer be accepting transfers.
  2. Transfers may not be setup by the organiser, which may mean they do not accept them at all. Please check the event organiser's terms or refund policy for more info on the event page.
  3. You did not pay for your entry - If, for whatever reason, your entry was free, you may not transfer it.