In Leipzig Ahlmann won a youngster class with the gelding. After his victory Mandato tested positive for  Dexamethason.  The FEI categorizes this medicine as a controlled medicine, prohibited at competitions. However the substance isn't on the list of prohibited substances.

"Mandato hasn't been treated with any medicines in the past six months," Ahlmann states. "However as a rider you are responsible for your horses 24h a day. I can only accept the decision of the FEI."

source: Pferd Aktuell