For each person, I usually enter each census as a fact in my software, to keep track of who I've identified in each census. However when it comes to the UK 1939 Register this becomes problematic.
There seems to be no good, standard fact type for this document. In GEDCOM there are a couple of choices – Census, or Residence.
The 1939 Register is not technically a census (although many genealogists, rightly or wrongly, treat it as one).
Where someone is recorded on the 1939 Register is not necessarily their residence.
Making a custom fact type is a possibility, but is less ideal as it may not be supported by every genealogy software, and in my experience can be messy when exporting GEDCOMs to other software or websites.
Is there any standard or best practice as to which fact type should be used for the 1939 Register?
This topic has been discussed more generally in the past, but not as it applies to the 1939 Register: Should I record a Census as a Census or a Residence?