MDG F4 on characteristic value

Hi All,

I am facing issue on MDG system while assigning F4 FM to characteristic value. Value table used for F4 have more than one primary key and that is why I need to use FM option. Everything works fine on GUI but on WUI ends with dump.

This is the case for all F4 methods on our MDG system. Could someone support me with solution?

Attaching pictures with dump on GUI and WUI.

Thank you in advance,

Goran