An order number is a uniquely assigned code to identify a customer order. It is used for the systematic recording, processing, and tracking of transactions within a company.
The order number is the heart of every order system. It makes individual orders distinguishable and traceable. Companies use it for internal management and communication with customers and suppliers. Without this unique identifier, structured processing would not be possible.
In practice, a process usually begins with the assignment of an order number. This is generated automatically by the ERP system or assigned manually. Each number is unique and used only once per order. This makes it possible to track at any time what was agreed upon, when, and with whom.
The order number can be found in many areas: on delivery notes, invoices, order confirmations, or in emails. Customers use it to inquire about the status of an order. Service employees access it to resolve problems more quickly.
In modern companies, it is usually managed digitally. Systems like SAP, Lexware, and DATEV rely on automatic number assignment. This saves time and minimizes errors. The number can be alphanumeric, meaning it can contain both letters and numbers.
