---
title: Licensing
description: "Only Administrators can open the Licenses page. It supports: • Viewing registered licenses and page usage. • Activating a license by serial number. • Selecting the active license. • Deleting a license after entering the required confirmation phrase. If the…"
url: "https://activerecord.com/docs/administration/9-licensing/"
updated: "2026-09-09"
category: "Administration - Oculens DDC Server (ODDC Server) 5.1"
---

# Licensing

Only Administrators can open the Licenses page. It supports:

• Viewing registered licenses and page usage.

• Activating a license by serial number.

• Selecting the active license.

• Deleting a license after entering the required confirmation phrase.

If the active license is missing, expired, invalid, or out of pages, the job pauses all processing jobs except itself. When a valid license becomes available, it resumes them.

License activation is hardware-sensitive.

### Page unit calculation

A page unit is based on A4 page area, with a 5 percent tolerance and A4 as the minimum unit. Recognition or data-extraction activity consumes page units, but a page is intended to be charged only once even if it undergoes more than one such operation.