I m trying to configure sflow on my S4048-ON on all interface but when in interface modei ran

sflow enable 

interface tengigabitethernet 1/15
sw-cns-coeur-ng(conf-if-te-1/15)#sflow enable
% Error: Te 1/15 Port is not in default mode.

this interface is in a port channel

should i enable sflow in the port channel?