MAGAZINE  №6 (95) December 2019


CATEGORY  Information technologies in logistics and SCM Inventory management Simulation modelling



 The article considers the situation when a company needs to distribute limited amount of stock to the regional warehouses in its own two-echelon distribution network. The network consists of a single distribution center and several regional facilities which are serving the company's customers. It is supposed that every warehouse calculates its requirements for the replenishment daily basing on the on-hand inventory, demand forecast, safety stocks and lead-times from the central warehouse. Thus, company's managers are aware of the consumption rate and inventory level at each regional facility. Demand forecasting and final replenishment planning decisions are centralized.
Notion of the "limited stock" refers to such inventory quantity at the central warehouse that is insufficient to satisfy the total volume of all regional warehouses' requirements for the product. Limited stock situation may have varying length in time.
A system of rationing rules or principles should be applied to make a distribution decision in such a situation. These set of rules identify the volume and sequence of the shipments from the central to regional warehouses.
So, in this article authors aim to solve the following problems:
- to identify factors that affect the choice of a certain set of rationing rules for the limited stock;
- to attempt to classify existing rationing principles;
- to identify how the business goals affect the choice of the preferred rationing principle;
- to create an imitation model and check experimentally which rationing principles are the best for each of the business goal
The outcomes gained might be used as a base for the choice of the limited stock rationing principles in companies with own distribution network, and for better tuning of the distribution algorithms in DRP systems or modules.

 Electronic version

 Keywords: inventory management imitation modeling simulation modeling simulation model inventory planning optimization stock rationing stock DRP


MAGAZINE №5 (76) October 2016


CATEGORY  Inventory management


Inventory reduction has become one of the main activities undertaken by most companies both in Russia and in the world. Companies strive to be efficient, especially in the present situation of the economic recession. However, it is often the case that management does not fully understand what lies behind the dry figures of financial reports. Inventory is necessary for any company, it helps the company to function properly and meet the customers’ demand on time. Therefore, thorough planning is crucial before any project on inventory reduction comes into effect. The first step for this project should be understanding the inventory structure. Without such understanding the company runs the risk of out of stock situation which results in profit lost and customers dissatisfaction.

There is a lot of information in both electronic and printed resources about how one can stratify inventory, basing on the goods’ position in the production process, or the purpose the inventory serves, or some other criteria. We will look at the example of a global FMCG company, which divides its inventory into several categories basing on the category’s purpose or root-cause of existence (transit, block, quarantine, prebuild, safety, cycle, overstock, residual). The company’s example shows how inventory can be successfully managed, taking into consideration each category’s specifics and addressing them by various means capable of influencing exactly this type of inventory, thus reducing stock on hand while not endangering service level. 


Published in Inventory management


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