Federal Act
on Public Procurement
(PPA)

¹ Ten­der­ers are free to pro­pose vari­ants in ad­di­tion to the goods, work or ser­vices de­scribed in the in­vit­a­tion to tender. The con­tract­ing au­thor­ity may lim­it or ex­clude this pos­sib­il­ity in the in­vit­a­tion to tender.

² A vari­ant is any tender that al­lows the aim of the pro­cure­ment to be achieved in a way that is dif­fer­ent from that en­vis­aged by the con­tract­ing au­thor­ity.