SAP Message UPC_FW146 - Funktion is not executable - no active tree

Diagnosis
The 'Search' function cannot be executed at the moment since nosuitable hierarchical list is selected. You can either use the functionin planning or in planning profiles. To use the function in planningprofiles, a profile must be in the display or change mode. You can callup the search function after you have selected an entry in thehierarchical list of all planning objects (upper left in the detailarea).

Procedure
Use the function in planning or go into the display or change mode of aprofile.