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

# Troubleshooting: The Phone Number on My Landing Page Isn't Swapping

> A step-by-step checklist for a landing page number that isn't dynamically swapping to an Invoca promo number.

Before running each check below, clear your domain cookies (close all private browsing windows and reopen a new one).

## Step 1: Verify the Invoca Tag is running on your site

Follow the [Invoca Tag troubleshooting guide](/s/article/validating-troubleshooting-tags) to confirm your Tag is correctly installed on your landing page and set to "live" in your Invoca account.

## Step 2: Confirm your Invoca campaign is set up correctly

1. In the sidebar, click **Campaigns**, then **Manage Campaigns**, and select the campaign containing the number you're troubleshooting.
2. On the campaign summary page, check:
   * Is the campaign active? A pending campaign, or one with unactivated changes, can affect number replacement.
   * Is there a RingPool associated with this campaign?

## Step 3: Troubleshoot your Invoca Tag in the Tag Wizard

1. Click **Settings** in the sidebar, then **Invoca Tag** under the Network section.
2. Check for the following:
   * Is the Tag in draft state? At least one Live version must be running — unpublished edits can interfere with number replacement.
   * Is the number you expect to be replaced actually identified in the Tag? If replacing all numbers on your site, the campaign name appears under "All calls will be routed based on this Campaign's call treatment." If replacing specific numbers, the campaign appears under "Replace specific phone numbers. Includes vanity numbers."
   * Did you include a value in "Required Parameter to Run" under Advanced Settings? If so, this could be interfering with the Tag's functionality — check the current Tag revision's Advanced (optional) tile.

## Still having trouble?

Contact Invoca Customer Support, and include:

* The URL of the page where you expect the number to swap
* The name of the Invoca Tag in your platform (for example, "Main Site")
* A link to the campaign in your platform
* A screenshot of `Invoca.PNAPI.display()`, if available, from the Invoca Tag troubleshooting guide

## Where to go next

* [Validating and Troubleshooting Invoca Tags](/s/article/validating-troubleshooting-tags)
* [Numbers or Custom Elements Not Swapped](/s/article/numbers-custom-element-not-swapped)
* [DNI Swapping Error: Not Ready](/s/article/dni-swapping-error-not-ready)