Just to confirm what the others say, it is a "notification" that the stop/start function is not available because the car "thinks" the battery condition is not appropriate. Mine will do this if I haven't given it a long run or charged the battery, the battery is only 3yrs old and in perfectly good health.
If the battery is starting the engine willingly with no sign of being sluggish then don't worry about it. The general consensus is that Honda were overly pessimistic/cautious when calibrating the system.
Another system which can be a little over sensitive is the tyre pressure warning, you may well get this showing up at some stage, I've had it. The answer is to carefully set the tyre pressures when they are cold (before driving) and reset the system (the procedure is in the owner's manual, find the reset in the menu), Then after driving for 15 or 20 miles it will have re-calibrated itself and you should have no further problems (unless the pressures do drop).