Info source issue DEmand Planning

Hi

I am getting this error while I am trying to create Info source.

The objects R3TR APCO YDPDPL_APPCOMP und R3TR APCO YDMO_APP cannot be edited together because the 1st object's original is in this system, whereas the 2nd object's original resides in another system.

hot to fix this

the error message number is TK112