Subscriptions can be synced or locked relative to their service plan. This determines whether plan changes automatically apply.

### Synced Subscriptions

- Properties match the service plan.
- Automatically receive plan changes.
- Default state for new subscriptions.

### Locked Subscriptions

- Created when you click **Customize** on a subscription.
- Do NOT receive plan updates.
- Can be synced back manually.

### Best Practices

- Keep most subscriptions synced for easier management.
- Only customize when a specific customer needs unique settings.

### Troubleshooting

**Plan update not applying:**

- Click **Sync** on the subscription to apply plan changes.

**"Sync failed":**

- The plan includes features not available to your reseller. Contact your hosting provider.

### Related Guides

- [Modify a plan](/hc/help/en/articles/how-to-modify-an-existing-plesk-service-plan)
- [Change a customer plan](/hc/help/en/articles/how-to-change-a-customer-service-plan-in-plesk)
- [Customise a single subscription](/hc/help/en/articles/how-to-customize-a-customer-subscription-in-plesk)