When a record is stored in Moski2.net we obviously store all the data from your fields, but we also store quite a bit more in order to be able to handle the content. Thus a number of strings must be avoided as field ID attributes as they will conflict with Moski2.net internals:
id
type_id
site_id
sort_value
created
created_by
updated
updated_by
parent_id
__parent__