---
title: "Automatically Assigning Requisition Numbers by the System"
slug: "system-assigned-requisition-numbers"
updated: 2026-04-10T17:46:21Z
published: 2026-04-10T17:46:21Z
canonical: "help.su-inc.com/system-assigned-requisition-numbers"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.su-inc.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Automatically Assigning Requisition Numbers by the System

The requisition numbers can be assigned automatically by the system when entering or copying requisitions using the [Requisitions option](/sui/docs/requisition-entry). When entering or copying a requisition, leave the Requisition Number field blank to have the system automatically assign the next available requisition number once the requisition is saved.

#### **How the requisition number is assigned:**

If having the system assign the requisition number, the system will assign the number as follows:

- First, if the requisition is tied to a ship to address with a defined requisition prefix, the number will be incremented from the most recently used requisition number with that prefix.
- Second, if a requisition prefix was defined in the Accounts Payable System File, the number will be incremented from the most recently used requisition number with that prefix.
- Otherwise, the number will be incremented from the most recently used requisition number.

> **Note:** If the Purchase Order Number Same as Requisition Number field is selected in the Accounts Payable System File, a requisition number cannot be used if it matches a purchase order number that already exists.