Catalyzes the dephosphorylation of undecaprenyl diphosphate (UPP). Confers resistance to bacitracin. di-trans,octa-cis-undecaprenyl diphosphate + H2O = di-trans,octa-cis-undecaprenyl phosphate + H(+) + phosphate Expression is sigma M, sigma X and sigma I-dependent. Induced by vancomycin and bacitracin, via sigma M. Expression is maximal during early exponential phase and decreases during stationary phase. Disruption results in a marked decrease of resistance to bacitracin. 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 BcrC/YbjG family.