@CubicDesign,
I've done some further investigation.
The Land Registry have a defect, a code error, in their system. They've identified the issue, which they are working on fixing, however have not provided a date and time of when this will be resolved on their end.
What we've been told and what has been passed onto Thomson Geer - two days ago - is that if this is an urgent matter, the transaction should be submitted via paper and not in PEXA.
