How to add unique ID property in Notion database

Quick summary

The Notion unique ID property automatically assigns a sequential, prefixed identifier to every item in a Notion database, making it easy to track tasks, projects, or records without manual numbering. Once configured, the ID sequence continues automatically for every new database entry.

Steps

1. Open the Notion page containing the database where you want to add a unique ID.
2. Click the + Add property button beside your existing database columns.
3. In the property type menu, select ID.
4. Click the new ID property name and rename it to something like UniqueID, Task ID, or Project ID.
5. Click Edit property to customize the unique ID, then type your preferred Prefix such as TASK or TSK.
6. Enter your chosen prefix — for example TASK — then click Add ID prefix to apply it.
7. Check the database to confirm that Notion automatically added unique IDs to each existing item.
8. Add a new database item to verify that Notion continues the ID sequence automatically.