> 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/add-delete-parameters.md).

# Add/delete parameters

Add or remove parameter entries and instances for one device.

Use **Parameter Management** to add or remove parameters and parameter instances.

### Before you start

Confirm that:

* you opened the correct device and application
* you know whether you need to add a parameter, add an instance, or delete one
* you understand the effect of removing the selected value

Capture the current parameter and instance before removal. Do not delete a value until you confirm the target application and device.

### Open the parameter view

Go to **Verifone Central** → **Device Management** → **Devices** → **View Devices** → **Device Details** → **Details** → **Parameters**.

<div data-with-frame="true"><figure><img src="https://1786380399-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdzivQyj8aHN5Kvmx8apX%2Fuploads%2F67wZmYr6baqVLdGPXYVk%2FPicture96.png?alt=media&amp;token=aab9f865-42bb-43b7-8f6c-b566cf5ac718" alt=""><figcaption></figcaption></figure></div>

### Add or delete the entry

1. Select the relevant add or delete icon for the parameter or instance.
2. Enter the parameter details when you add a new value.
3. Confirm the action only after reviewing the selected parameter or instance.

<div data-with-frame="true"><figure><img src="https://1786380399-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdzivQyj8aHN5Kvmx8apX%2Fuploads%2FKjfwxtY594RoDEjKUSOD%2FPicture97.png?alt=media&amp;token=c161536e-41be-4f13-b05f-36e7dcaaadf4" alt=""><figcaption></figcaption></figure></div>

Enter the parameter details and select **Add** to create the new parameter.

<div data-with-frame="true"><figure><img src="https://1786380399-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdzivQyj8aHN5Kvmx8apX%2Fuploads%2FpOghtLTSL7umkmOb9Jxb%2FPicture98.png?alt=media&amp;token=54540832-0a60-4281-a055-9b522c75ccbe" alt=""><figcaption></figcaption></figure></div>

A confirmation popup message is displayed saying that the parameters were added successfully.

<div data-with-frame="true"><figure><img src="https://1786380399-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FdzivQyj8aHN5Kvmx8apX%2Fuploads%2Fs7qmTjjAOWbLI2V3X13T%2FPicture99.png?alt=media&amp;token=abd79870-ab0a-47f2-bae1-ec2a3760802c" alt=""><figcaption></figcaption></figure></div>

A confirmation popup message is displayed before deleting the instance.

{% hint style="warning" %}
Deletion removes the selected entry or instance. Stop if you cannot confirm its device, application, and parameter path.
{% endhint %}

### Verify the result

After the action completes, confirm that:

* the new or removed parameter appears correctly in the parameter view
* the change was applied to the intended instance
* any follow-up download scheduling is completed if the device must receive the update
* the device and application still match the intended change scope
* the remaining parameter structure matches the intended configuration

### Related pages

* [To view/edit basic/advanced parameters for a single device](https://verifone.gitbook.io/us-core-help-center/verifone-central/verifone-central/rollouts/parameter-management/to-view-edit-basic-advanced-parameters-for-a-single-device) — review or edit parameter values
* [Schedule rollouts](https://verifone.gitbook.io/us-core-help-center/verifone-central/verifone-central/rollouts/schedule-rollouts) — deliver the change to devices


---

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