PMP450m - Engineering key disable

Pls see the attached screenshot. Against the board model there is a dialogue"Engineering key disable". What it mean? Can anyone help me to understand this…
I am facing hanging issue from this radio… it’s getting hanged at least once per day.

This radio was used for Engineering debug at one point and debug key disabled. It is nothing to be overly concerned about.

Please upgrade your software to or 20.3 and let us know if you have any issues. Thanks.