The cultivar is actually 'Sunseneribuba' and that should be entered in the cultivar field.
The trade name is "Senetti® Blue Bicolor" and should be entered in the trade name field.
The "Senetti Series" is a series name and the database does not currently support series, so leave it entirely out. There will come a time that we will support series but we are not there yet.
So, it looks like this plant is properly created as:
Common name: Florist's Cineraria
Genus: Pericallis
Species: x hybrida
Trade name: Senetti® Blue Bicolor
Cultivar: Sunseneribuba
