Not able to setup Material Pack scenario

Hi , I am trying to explore Material Pack scenario but after clicking on Pack icon, it is thrown below error. Not able to figure out what i am missing.

The Material M1 no longer meets the conditions for packing. Please close this window.

I followed the given document but it is not much clear.I am using CM10.2.3.

I was able to fix this. We have to setup feeder on main resource.