In recent years management of customer requirements has been the foremost c
oncern of most manufacturers. In this paper, we consider a single-period pr
oblem in which the manufacturer faces stochastic demand and individual serv
ice level constraints from multiple customers. We present a formulation for
the problem that utilizes the structure of the underlying allocation probl
em and provide an algorithm that generates the optimal procurement quantity
under the optimal random allocation policy. For a special case when there
are two identical customers and their demand is jointly uniform, we derive
an analytical expression for the optimal procurement quantity. (C) 1999 Els
evier Science B.V. All rights reserved.