The instructions to tenderers must state whether the tenderer submitting a variant solution is to be responsible for the design of the variant solution, and if this is the case, must specify procedures, in particular for checking, revision and approval.
V navodilih ponudnikom mora biti navedeno, ali je ponudnik, ki odda variantno ponudbo, odgovoren za projektiranje variantnega predloga in, če je tako, morajo biti določeni postopki, zlasti za preverjanje, popravke in odobritev.