---
title: TopOn
description: >-
  TopOn Unity guide for Mediation Adapters(GMA SDK).
---

> **For AI agents:** the complete documentation index is at [llms.txt](https://docs.tapmind.io/llms.txt). Append `.md` to any page URL for its markdown version.

## Prerequisites

*Performed by: Developer*

* See the [Compatibility Matrix](https://docs.tapmind.io/reference/compatibility-matrix) for the minimum Android and iOS versions for this package.
* The GMA Unity plugin must be imported and AdMob app IDs set under **Assets → Google Mobile Ads → Settings**


## Install the SDK

*Performed by: Developer*

In Unity **Package Manager → Add package from git URL**:

```
https://github.com/tapmind-tech/TapMind-CA-Toponad-Unity.git
```

TapMind's Unity package uses a **post-processing script** that automatically adds the native Android and iOS dependencies during the Unity build. Git tag-based pinning is not used - add the package from the repository URL above.

Import the GMA Unity plugin and set AdMob app IDs under **Assets → Google Mobile Ads → Settings**.

**App ID Configuration:**
Ensure the **App ID used in the application matches the App ID configured for TapMind in the TopOn mediation**. Using a different App ID may prevent the **TapMind SDK from initializing correctly**.

## Configure TopOn

*Performed by: Ad ops*

Refer [TopOn Mediation Integration Setup](https://docs.tapmind.io/reference/mediation-integration-setup/topon) for the integration.

Refer **[Class & Network Key Registry](https://docs.tapmind.io/reference/class-network-key-registry)** for the classnames.

## Verify integration

*Performed by: Developer*

After install and dashboard configuration:

1. Run your app in a **debug** build. TapMind's test mode is enabled automatically in debug builds and serves test ads at a high fill rate.
2. Request an ad through your mediation SDK as you normally would.
3. Confirm a TapMind ad fills. Check logs for the tag **`TapMindAdapter`**.
4. When verified, build in **release** mode for production - test mode is disabled automatically in release builds, and live ads serve.

**Note:** Test mode is automatic. It follows your build type: debug = test ads, release = live ads. There is no flag to enable or disable, and nothing to turn off before going live.

**Release build QA:** There is currently no documented release-safe test path to validate R8/ProGuard without serving live ads. Consumer ProGuard rules from the TapMind AAR are applied automatically when you integrate the published adapter packages.

## Troubleshooting

*Performed by: Developer*

Before diving into logs, confirm adapter class names against the [Class & Network Key Registry](https://docs.tapmind.io/reference/class-network-key-registry), **placementName**, **placementcode** and **eCPM/rate** with your account manager.

See [Troubleshooting](https://docs.tapmind.io/reference/troubleshooting) for common symptoms, mediation-specific fixes, release vs debug guidance, and escalation steps. Partner-specific verification steps are under **Verify integration** above.