HEC-HMS warning 12050

[DPAJR]

I have a project of 500 acres. The terrain is very irregular. I divided the Basin into 7 subbasins. There are seven reaches all located in downstream subbasins. The upstream subbasins are connect directly to reaches located in a central basin which is surrounded by higher ground. Whenever I load the project I get 7 warning messages, one for each subbasin.

"Warning 12050 unrecognized parameter in basin model "Basin 1"
Section begins with label "Reach 1"
Line contents are "channel:kinematic wave"

Any help would be a lifesaver.

Thanks
dpajr