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

# Why Did My Campaign Send to Zero Users When the Segment Has Users?

> Troubleshoot a MoEngage campaign that resolves to zero recipients even though the selected segment returns users, including the Developer role test-device restriction.

## Problem

A campaign targets a segment that returns users when you run the segment query, but the campaign resolves to 0 recipients. Segmentation completes successfully and returns an accurate count of 0.

## Instructions

Check whether a user with the Developer role created the campaign on a live app.

On a live app, MoEngage limits campaigns created under the [Developer role](/docs/user-guide/settings/account/team-management/access-roles#developer) to users marked as test users or test devices. The campaign audience becomes the intersection of the selected segment and your test users, so a segment that contains no test users resolves to 0 recipients. In segmentation debug output, this restriction appears as an added `moe_test_device = true` filter on the query.

To confirm, open the campaign and check the role of the user who created it.

To reach the full segment, choose one of the following options:

* Ask a user with a role that publishes to live users — Admin, Manager, or Marketer — to create the campaign, or to duplicate the campaign and send it.
* Mark the users you want to reach as test users before you send the campaign from a Developer account. For more information, refer to [Test Users](/docs/user-guide/getting-started/integration/test-users).
* Send the campaign from a test app when the intent is Developer testing.

When the campaign uses the [campaign approval workflow](/docs/user-guide/settings/account/team-management/campaign-approval-workflow), an approver who edits the campaign before approving it passes their own role to the campaign, which also changes who the campaign targets.

## Example

A custom segment returns 146 users, but the campaign built on that segment reaches 0 recipients. A user with the Developer role created the campaign on a live app, so the test-device restriction applies. The segment contains no test users, so the intersection is empty. Duplicating the campaign from a Marketer account and sending it reaches all 146 users.