Govindan Nagappan
Ansys Employee

You can also check the "solution information" for the feedback from the MPCHG command

For example, I used these commands

cmsel,s,body1,elem
mpchg,3,all
allsel

I got the following feedback in solution information:

SELECT      COMPONENT BODY1                          

 SET MATERIAL OF SELECTED ELEMENTS TO     3

 SELECT ALL ENTITIES OF TYPE= ALL  AND BELOW