Question juridique clé
Admissibility of grievances not raised before the last cantonal instance
Solution extraite
Only arguments concerning the amount above the first-instance award could be examined; challenges to the existence and validity of the mandate and to entitlement to any fee were inadmissible.
Motifs extraits
Under the subsidiarity rule, a public-law appeal can rely only on grievances actually submitted to the cantonal court of last instance. On appeal in Geneva, the company had accepted the principle of remuneration and contested only costs allocation.