Navya C
Ansys Employee

I am not sure what your model is, but, if you are working on Maxwell 3D,  you have to create a section in the current carrying coil/element before assigning the current to any element.

Make sure,

1. you are on proper working co-ordinate system for performing the section operation. 

2. You have applied insulation boundary conditions to the current carrying membrane in your model.

Refer Maxwell help section on how to create section and assign current.