a di-trans,poly-cis-dolichyl beta-D-mannosyl phosphate + H2O => D-mannose + a di-trans,poly-cis-dolichyl phosphate + H(+)
a di-trans,poly-cis-dolichyl beta-d-mannosyl phosphate + h2o => d-mannose + a di-trans,poly-cis-dolichyl phosphate + h(+)