> For the complete documentation index, see [llms.txt](https://docs.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.verifone.com/verifone-central-getting-started/verifone-central/verifone-central-device-manager/rollouts/parameter-management/edit-parameters-for-batch-devices.md).
# Edit parameters for batch devices
Review or update parameters before you schedule a batch rollout.
Review or update parameters during a batch **Parameters Only** rollout.
### Before you start
Confirm that:
* the rollout should update parameters for multiple devices
* you know which application needs the change
* the selected devices should receive the same parameter set
Record the application version, changed values, and expected target count. Stop if any selected device needs a different configuration.
### Edit parameters for batch devices
1. Go to **Verifone Central** → **Device Management** → **Rollouts** → **Create Rollout**.
2. Select the **Parameters Only** rollout path.
3. Select the application you want to update.
4. Select the edit icon to review or update the basic and advanced parameters for the selected application.
5. Save the parameter changes.
6. Compare the saved values with the intended application version and batch scope.
7. Continue the rollout flow to schedule the rollout for the selected devices.
{% hint style="warning" %}
Do not schedule the rollout if one device needs different values. Use the single-device flow for that device.
{% endhint %}
### Verify the result
Before you start the rollout, confirm that:
* the correct application was edited
* the updated values are saved
* the rollout still targets the intended device batch
* the application version and parameter values match the deployment plan
* the saved values match the approved batch configuration
### Result
The updated parameters are included in the rollout.
### Related pages
* [Parameter management](https://verifone.gitbook.io/us-core-help-center/verifone-central/verifone-central/rollouts/parameter-management) — understand parameter sources and structure
* [Create a batch rollout](https://verifone.gitbook.io/us-core-help-center/verifone-central/verifone-central/rollouts/schedule-rollouts/create-a-batch-rollout) — complete the rollout flow
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