@adas-bradauskas Possible. On followed screenshot 4 self created fields with brackets from Persons collection that were used in backend-data.js-calculated fields.
The fifth one [pStory] created not by me (it’s not possible)
It’s coming from regular reference field created by me in other collection Stories.
Have to say that all entries of Stories-sObject are full but Persons -[pStory] has only 2 entries.
In case of Products-Items The current situation
Sorry, but I made changes by adding [iProduct] field to schema (yes it was in brackets). Honestly I don’t remember but a chance exists that I tried to create reference field before and deleted. Any way the [New Field] exists without updates ( it’s not corresponded to iProduct?).