Definition of the relevant Characteristics of the Classification per Equipment. These Characteristics can be used in the FSM App. Within FSM the Characteristics will be stored in a structured text field. Below shows the class type of the equipment (IE03 Class Overview). 
In equipment settings (/PACG/ECM_EQ1) the field "Ltext Rule Equi" must be set to "C – Characteristics" for the characteristics to be shown in FSM.
In the mobile app, under the equipment, the below is shown.
In SAP FSM master data: