Hi Sharu
KP26 you plan the activity qty.
KP06 you plan the expenses..
when you calculate activity price as expense /activity qty, that gets updated again in KP26
The error you are getting - Maintain mapping between CC and act type before you plan any expense in KP06 along with activity type
In KP26 just enter the Capacity as 1 for this act type and then do KP06
Br. Ajay M