1. A method for generating an allocation table in a computerized procurement system, comprising the steps of: receiving first data from a purchase order regarding a plurality of articles to be allocated; receiving second data from an assortment regarding the plurality of articles and a plurality of stores identified for receiving the articles at specified times; determining a fixed quantity of each article to be allocated to each store based on at least one of the first and second data, wherein the fixed quantity of each article is the same for all stores; and determining a variable quantity of each article to be allocated to each store, wherein the variable quantity of each article is individually set for each store, and wherein the variable quantity of each article is determined based on analysis of historical data.