WHAT DOES PEUGEOT ADBLUE DELETE MEAN?

The car was topped up with AdBlue (it did not actually need it), however the concept stayed lit for the following few hundred miles, till it could have a go to to a key VX dealer workshop, in the event the message/light-weight was even now demonstrating.I have had it over a long haul today and the risk of clogging error and service lights are on mu