# Device Management
## Payment terminals
To view the list of payment terminals registered by the Acquiring Service Provider and their status, go to the menu `Device Management` - > `Payment Terminals`.
> The `Active` status means that the payment terminal can be used for accepting payments. If the status of the payment terminal is different from `Active`, it cannot be used for accepting payments. The decision to deactivate a payment terminal is made by your Acquiring Service Provider.
{% hint style="warning" %}
If in the `Mobile device` field of a payment terminal is indicated the ID of a mobile device, it means that this terminal is already linked and used on this device.
{% endhint %}
Mobile devices
To view the list of mobile devices [initialized](broken://pages/-MZUbzgl96tSogXkwPjf#initialization) in the Application and their status, go to the menu `Device Management` - > `Mobile devices list`.
> The "Activated" status means that the mobile device is bound to an active payment terminal and can accept payments.
>
> The "Disabled" status means that the mobile device cannot accept payments, because the payment terminal bound to it is deactivated (blocked) by the Acquiring Service Provider. You cannot accept payments with this device.
>
> The status "Not configured" means that the mobile device is not bound to any payment terminal. You cannot accept payments on this device.
In this section, you can view the registers of receipts. A receipt register contains information about open and closed business days for each of the mobile devices. Also in this section, you can view consolidated information about transactions on a mobile device for a corresponding business day.
Also in this menu item, you can use the functionality for unbinding a payment terminal from a mobile device.
Payment Terminal unbinding
During the initialization of a device and/or activation of a payment terminal, you may encounter the message `There are no available terminals for the current mobile device` .
You can get this message when all of the payment terminals generated by your :bank: Acquiring Service Provider are already linked to your other mobile devices. One of the ways out of this situation may be disconnecting a payment terminal from one of the currently unused mobile devices.
To do this, go to the menu `Device Management` - > `Mobile devices list`.
Open the profile of the required device to view it.
In the `Payment Terminal` field, click `Unbind`.
{% hint style="danger" %}
Before unbinding the payment terminal from the device, you must first close the business day on it. About closing the business day see [here](/guide/app-guide/business-day.md).
{% endhint %}
{% hint style="warning" %}
If you cannot close the business day because the device is deactivated (blocked), then contact the support service of your Acquiring Service Provider.
{% endhint %}
{% hint style="info" %}
You can also use the device unbinding function from the payment terminal if different Merchants use the same device within the same Acquiring Service Provider.
Additionally, after unbinding the device from the Merchant, we recommend to clear the Application data used by the "old" Merchant, and go through the [initialization](broken://pages/-MZUbzgl96tSogXkwPjf#initialization) process over again. To do this:
* Go to the device settings, to the Applications section.
* Find the Application.
* Open the "Storage" section (or something similar to that title).
* Click Clear Cache and Clear Data.
{% endhint %}
## Close Business Day
To close a business day on a specific mobile device, go to the `Device Management` -> `Mobile devices` menu item. On the required device press the `Register of receipts` button to go to the section that provides information about all (open and closed) business days of this device.
To complete the operation, click the `Close business day` button.
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