Catalyzes the dephosphorylation of undecaprenyl diphosphate (UPP) (By similarity). Confers resistance to bacitracin. Is also required for virulence. di-trans,octa-cis-undecaprenyl diphosphate + H2O = di-trans,octa-cis-undecaprenyl phosphate + H(+) + phosphate Bacitracin is thought to be involved in the inhibition of peptidoglycan synthesis by sequestering undecaprenyl diphosphate, thereby reducing the pool of lipid carrier available. Belongs to the UppP family.