Value '05uFF71uFF7BuFF8B ' for characteristic ZJLEG_PPL contains invalid characters

Hi,

One of our Master data attribute load is failing with the following error message.

Value '05ｱｻﾋ ' for characteristic Z_PPL contains invalid characters

As you see there are some Japanese characters when it is trying to load into Char string?

Can we load such characteristics?

Where can we check which all Languages are installed in the system?

If we want to maintain these to the Special characteristics in RSKC transaction?

Can we enter these characteristics using English keyboard?

Regards

Ajay