Question : Cannot enter data from the query based datasheet

Could you tell me what properties of a QUERY that would allow me to enter data through a datasheet. At the moment, I have a read only situation. The query is based on joins of two tables.  Also there are expressions in the query layout.

Answer : Cannot enter data from the query based datasheet

that is not the only problem, go down 6 rows

Query that includes more than one table or query, and the tables or queries aren't joined by a join line in Design view