What is the M109-Y axis front limit abnormality error message with code M109-Y in machine code KM-ASSYM5-02?

What error ID is 40 associated with the M109-Y axis front limit abnormality error
The M109-Y axis front limit abnormality (X7) error occurs when the Y-axis position or velocity exceeds the front limit, which can be caused by a damaged Y-axis motor or a faulty limit switch