---
schema_version: "1"
id: 69f285f7ec2824da35eda093644ae4d4232d10c0c0a6898fd2ea7b2ecf446873
title: Schedule a Data Extension Entry Source
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/mktg/264-0-0/mc_jb_schedule_a_data_extension_entry_source.md
canonical_url: https://help.salesforce.com/s/articleView?id=mktg.mc_jb_schedule_a_data_extension_entry_source.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: eaf19ac8ab8dc025c6f35eedcecf70ce3f92f0e2629faff48990a684fe02cd3b
description: To define how often Marketing Cloud Engagement Journey Builder admits contacts from a data extension entry source, set a schedule. You can schedule how often you want to check the data extension for updates, from hourly to yearly. You can also select how long you want the entry source schedule to run for some entry events. After you configure a data extension entry source, a schedule tile appears.
products:
  - Marketing
  - Marketing Cloud Engagement
release: "264"
---
# Schedule a Data Extension Entry Source

To define how often Marketing Cloud Engagement Journey Builder admits contacts from a data extension entry source, set a schedule. You can schedule how often you want to check the data extension for updates, from hourly to yearly. You can also select how long you want the entry source schedule to run for some entry events. After you configure a data extension entry source, a schedule tile appears.

If the automation regularly modifies or updates the data extension that you selected, you can use the Automation schedule type. The journey admits eligible contacts when the automation runs.

![Note](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-mktg-mc_journeys_and_automations-264-0-0-production-enus/e08cdd71-c1c1-4ae5-a5e9-8a6dad583ad4/images/icon_note.png)

Note Single Send Journeys don't support Recurring and Automation.

![Note](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-mktg-mc_journeys_and_automations-264-0-0-production-enus/e08cdd71-c1c1-4ae5-a5e9-8a6dad583ad4/images/icon_note.png)

Note Schedule dates must fall between 1/1/1900 12:00:00 AM and 6/6/2079 11:59:59 PM.

1. Click **Schedule**.
2. To determine when and how often the journey admits contacts, select a schedule type.
3. Click **Select**.
4. Select when contacts from the data extension enter the journey. As asterisk in the time zone menu indicates if daylight saving time is observed.
    
    - When you select **Run Once**, Journey Builder evaluates contacts on activation or at the specified date and time.
    - When you select **Recurring**, enter a start date when contacts enter the journey, how frequently contacts are evaluated for admission, and how many times they're evaluated.
    - When you select **Automation**, the journey evaluates contact records when your selected automation completes.
    
    ![Note](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-mktg-mc_journeys_and_automations-264-0-0-production-enus/e08cdd71-c1c1-4ae5-a5e9-8a6dad583ad4/images/icon_note.png)
    
    Note When a file drop automation updates the source data extension, all records in the source data extension gets evaluated each time.
5. If the contacts enter on a repeating basis, select the recordset that Journey Builder evaluates each time the schedule repeats.
6. Click **Summary**.
7. Click **Done**.

Activate the journey to start the schedule. If contact records are being evaluated when the next run is scheduled to begin, the run gets skipped. Records are processed in the next run.