There are POTA operators that will log a park K,1234 or US,1234. The app logs 2 QSOs in this case. The operator is just doing “comma separate” like the field states.
I understand this is not what “comma separate” is intended for. Its to enter separate multiple P2Ps.
Never in a hundred years would I have assumed someone would attempt to separate the prefix from the number with a comma instead of the usual dash. But I guess anything is possible.
@jarrett, perhaps instead of using “comma separated”, use “separate mult parks w/comma”.