Significant coding with sequential numbering assigns codes that reflect specific product attributes (e.g., wattage, type) with an added sequential number for unique identification. This approach facilitates easy identification and tracking, an essential feature in whole-life asset management for maintaining organized inventory records.

Organisations often create their own stock keeping unit (SKU) numbering system, which may or may not have a meaningful structure. Stock keeping unit is a number that is assigned to a product for the purpose of inventory management and is of tracking. In other words, a stock keeping unit is a unique identifier assigned to each product for easier and more efficient record keeping.
An FDA (US Food and Drug Administration) product code describes a specific product and contains a combination of five to seven numbers and letters. The product code submitted with each FDA line item should match the actual product name and/or invoice description of the product.
The International Standard Book Number is a numeric commercial book identifier which is in-tended to be unique. Publishers purchase ISBNs from an affiliate of the International ISBN Agency.
The Harmonized Commodity Description and Coding System, also known as the Harmonized System (HS) of tariff nomenclature is an internationally standardized system of names and numbers to classify traded products.

Lean thinking aims to remove wastes from work processes. Before diving into the 8 wastes, it is important to understand what waste is. Waste is any action or step in a process that does not add value to the customer. In other words, waste is any process that the customer does not want to pay for.
The original seven wastes (Muda) was developed by Taiichi Ohno, the Chief Engineer at Toyota, as part of the Toyota Production System (TPS). The seven wastes are Transportation, Inventory, Motion, Waiting, Overproduction, Overprocessing and Defects. They are often referred to by the acronym 'TIMWOOD'. The
8th waste of non-utilized talent or 'Skills' of workers was later introduced in the 1990s when the Toyota Production System was adopted in the Western world. As a result, the 8 wastes are commonly referred to as
'TIMWOODS'.
Source: The lean way
Multiple approval levels for a small purchase request is an example of over-processing since this adds more unnecessary work to users and procurement professionals.