Agree with Barb. Fieldmap hasn’t callery pear listed and government still plant / promote it. CNM was an option for us to document how a species that has been used as street tree invades nature reserve about 8 years after planting.
But sometimes it is a good idea to record the extent of the invasive problem species; for instance the records in CNM, which end up in ALA, are invaluable to document the expansion of Callery Pear. And a photo in CNM which can be referenced in FieldMaps shows the size of the problem at the mapped site.