Record the equipment pair
Identify the exact receiver model and serial number, then identify the smartcard supplied with that receiver. UEC says registration uses the receiver model, serial number and smartcard number. Put those three fields together in a private equipment record so details from two boxes are not accidentally mixed.
For an illustrative replacement, label the old receiver and card as one pair and the new receiver and card as another pair. A similar case design or manufacturer name does not establish that the cards can be exchanged. The purpose of the record is to keep the administrator’s enquiry tied to the actual equipment involved.
Separate replacement from a refresh request
A rehit is described in UEC’s support guidance as an authorisation-refresh action. It should not be treated as evidence that a different receiver/card combination has become registered. If the equipment pair has changed, explain that change when using the official registration or support route.
Also distinguish a card-recognition problem from a service-permission message. Record the actual message and whether the receiver information screen identifies the expected card, using the instructions for that model. Avoid borrowing another receiver’s card as an assumed account test, because the paired relationship makes that comparison unreliable.
Prepare a useful replacement enquiry
Keep the old and new equipment details separate, state whether the old unit is faulty or simply being replaced and include the registration reference available to you. The government directs registration and activation questions to the VAST administrator and notes that technical support may also involve the equipment supplier.
Use those private details only through the appropriate support or application route. A public forum can usually discuss the model and exact error without needing the complete smartcard or serial number. Once the administrator explains the next step, preserve that response with the new equipment record rather than assuming that a successful card refresh on the old pair settles registration of the replacement.