  Practically all serious calculations of exclusive particle production in
ultra-relativistic nuclear or hadronic interactions are performed in the
framework of Gribov-Regge theory or the eikonalized parton model scheme.
  It is the purpose of this paper to point out serious inconsistencies in the
above-mentioned approaches.
  We will demonstrate that requiring theoretical self-consistency reduces the
freedom in modeling high energy nuclear scattering enormously.
  We will introduce a fully self-consistent formulation of the
multiple-scattering scheme in the framework of a Gribov-Regge type effective
theory.
  In addition, we develop new computational techniques which allow for the
first time a satisfactory solution of the problem in the sense that calculation
s of observable quantities can be done strictly within a self-consistent
formalism.
