Questions about example sentences with, and the definition and usage of "Erroneous"

A: in error

A: Because their data was flawed, the scientists reached an erroneous conclusion.

The finance team reported that several erroneous payments were made in March.

The police received a report about a robbery in progress that later proved to be erroneous.

A: Erroneous is more formal and descriptive than just using the word “wrong” - it is a somewhat more complex way of saying the same thing.