> ## Documentation Index
> Fetch the complete documentation index at: https://docs.taliuphq.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Start using WEB-SRM on an existing merchant

> Turn WEB-SRM on for a merchant already using Taliup POS: enable it in HQ, confirm the app version, then log out and enrol each device.

Use this page when a merchant is **already taking sales** on Taliup POS and now needs Revenu Québec WEB-SRM. Work through the four steps in order. Keep the merchant off **Register** until enrolment is done on that device.

<Steps>
  <Step title="Enable WEB-SRM in Taliup HQ">
    Complete [WEB-SRM settings](/taliup-hq/onboarding/web-srm): turn on **Enable Web-SRM**, enter the Revenu Québec credentials, and save.

    Do this before the merchant logs back in on the device.

    <Note>
      The first time you enable WEB-SRM, Taliup HQ replaces catalog taxes with Québec **GST** and **QST**. Confirm the catalog is ready before you save.
    </Note>
  </Step>

  <Step title="Confirm the Taliup POS version">
    The device needs a WEB-SRM-capable Taliup POS build. Check the version on the device:

    | Device                     | Minimum version                  |
    | -------------------------- | -------------------------------- |
    | **Poynt C / Newland N950** | **2.0.14** (version code **57**) |
    | **PAX A920 Pro**           | **2.0.8** (version code **26**)  |

    * **At or above the minimum** — skip the update. Go to step 3.
    * **Below the minimum** — update the app using the matching tab below, then go to step 3.

    <div className="update-app-panel">
      <Accordion title="How to update if the version is too low">
        <Tabs>
          <Tab title="Poynt C / Newland N950">
            <Steps>
              <Step title="Check for a software update">
                On the device, go to **Settings** → **Software updates** → **Check for software update**. Tap **Check for updates**.

                Install **2.0.14** (version code **57**) or later.
              </Step>

              <Step title="Push from Poynt Store if needed">
                If **Check for updates** does not start the download, push Taliup POS **2.0.14** from **Poynt Store**.
              </Step>
            </Steps>
          </Tab>

          <Tab title="PAX A920 Pro">
            Push Taliup POS **2.0.8** (version code **26**) or later from **PaxStore**. Do not ask the merchant to update from the device.

            <Steps>
              <Step title="Open the device in PaxStore">
                In **PaxStore** → **Terminal Management**, open the merchant's A920 Pro.
              </Step>

              <Step title="Push Taliup POS">
                On **Push Task**, push **Taliup POS** **2.0.8** or later. See [PaxStore setup](/taliup-hq/devices/pax/paxstore) if you need the full push sequence.
              </Step>

              <Step title="Wait for Success">
                Confirm the Push Task shows **Success** before the merchant opens Taliup POS.
              </Step>
            </Steps>
          </Tab>

          <Tab title="AiOne">
            AiOne cannot update Taliup POS in place. Uninstall and install again from **Payrillium Store**, then activate the device with the **Device ID** from Taliup HQ.

            <Steps>
              <Step title="Exit Taliup POS">
                Leave the Taliup POS app and go to the device home screen.
              </Step>

              <Step title="Uninstall Taliup POS">
                Open **Payrillium Store** → find **Taliup POS** → tap **Uninstall**.
              </Step>

              <Step title="Install the new version">
                On the same Taliup POS listing, tap **Install**.
              </Step>

              <Step title="Open Taliup POS and enter the Device ID">
                Open **Taliup POS**. The device asks for a **Device ID**.
              </Step>

              <Step title="Copy the Device ID from Taliup HQ">
                In Taliup HQ, go to **Entities**, open the merchant, click **Manage**, then open the **Devices** tab. Find the AiOne device and give the merchant that **Device ID**.
              </Step>

              <Step title="Activate the device">
                Enter the **Device ID** on the device and tap **Activate device**.
              </Step>

              <Step title="Choose the device type">
                If the Device ID is correct, choose **Lane 3600** or **Link 2500** to match the hardware, then tap **Continue**.
              </Step>
            </Steps>

            Taliup POS then opens the login screen. Continue with step 3.
          </Tab>
        </Tabs>
      </Accordion>
    </div>
  </Step>

  <Step title="Log out and log back in">
    Do this on **every** device that will bill, even if you did not update the app.

    Taliup POS only fetches WEB-SRM (MEV) credentials and settings on login.

    <Warning>
      If the merchant stays logged in after you enable WEB-SRM in HQ, enrolment will not appear. Log out, then log back in with the employee's six-digit passcode.
    </Warning>
  </Step>

  <Step title="Enrol the device">
    After login, **Enrol this device** should appear. Request a certificate, then register the signed-in user.

    Follow [Enrol a device](/taliup-pos/web-srm). Repeat on every device.
  </Step>
</Steps>

## Check

| Check                      | Expected                                                                        |
| -------------------------- | ------------------------------------------------------------------------------- |
| App version                | Poynt / Newland **2.0.14+** (code **57**), or A920 Pro **2.0.8+** (code **26**) |
| **Settings** → **WEB-SRM** | **Status** is **Certificate installed**                                         |
| Home                       | **Register**, **Tables**, and **Menu** are available                            |

## Troubleshooting

| Problem                                                       | What to try                                                                                           |
| ------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------- |
| Enrolment screen never appears                                | Confirm HQ WEB-SRM is saved, then **log out and log back in**.                                        |
| **This business has no WEB-SRM configuration from Taliup HQ** | Finish [WEB-SRM settings](/taliup-hq/onboarding/web-srm), then log out and log back in.               |
| Poynt / Newland is below 2.0.14                               | **Settings** → **Software updates** → **Check for updates**, or push **2.0.14** from **Poynt Store**. |
| A920 Pro is below 2.0.8                                       | Push Taliup POS **2.0.8** from **PaxStore**.                                                          |
| AiOne asks for a Device ID after reinstall                    | Expected. Copy **Device ID** from Taliup HQ → **Entities** → **Manage** → **Devices**.                |
| AiOne device type step                                        | Choose **Lane 3600** or **Link 2500** to match the hardware.                                          |