Program AEZCCS03 processes the records of the land inventory and calculates for each location (agro-ecological cell) production potential by primary crop as well as crop combinations according to the AEZ land productivity assessment principles. Application of these rules yields an average productivity factor relative to the maximum attainable yield of a particular crop. For each crop/crop combination and each location a productivity loss factor, accounting for water erosion hazard and soil degradation, is quantified. The program generates an intermediate data file, containing cell information and crop combination records, which forms the basis for assessing district/regional and nation-wide policy scenarios.