---
title: "Change Track IDs and Domain at Runtime"
slug: "mapp-intelligence-ios-sdk-v5-change-track-ids-domain-runtime"
updated: 2026-04-30T12:19:47Z
published: 2026-04-30T12:19:47Z
canonical: "docs.mapp.com/mapp-intelligence-ios-sdk-v5-change-track-ids-domain-runtime"
---

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

# Change Track IDs and Domain at Runtime

Track IDs and Track Domain are normally configured once at SDK initialization. The iOS SDK also supports changing them at runtime — for example, when your app is offered in multiple countries and each language or region is analyzed in a separate Mapp Intelligence account.

Before you start, complete the [Quickstart](/v1/docs/mapp-intelligence-ios-sdk-v5-quickstart) so the SDK is initialized.

> [!CAUTION]
> **Important:** Switching accounts at runtime affects entry and exit pages in your analyses and may increase the number of bounces. Consult with your customer success manager before using this feature in production.

Available since iOS SDK version 5.0.3.

---

## Method

| Method | Description |
| --- | --- |
| `setIdsAndDomain(_ trackIDs: [Any], onTrackdomain: String)` | Replaces the active Track ID(s) and Track Domain at runtime. |

---

## Example

**Swift**

```swift
MappIntelligence.shared()?.setIdsAndDomain(
    [987654321098765],
    onTrackdomain: "https://other-trackdomain.com"
)
```

**Objective-C**

```objectivec
[[MappIntelligence shared]
    setIdsAndDomain:@[@987654321098765]
      onTrackdomain:@"https://other-trackdomain.com"];
```

---

## Limitations

- This method changes the Track ID and Track Domain only for the current session. To keep the change for future app launches, pass the same values to `initWithConfiguration(...)` on next start. See [Initialize the SDK](/v1/docs/mapp-intelligence-ios-sdk-v5-initialize-sdk).
- A short delay between the call and the new settings becoming active is possible.
- We do not recommend calling this with the same Track ID that is already active.
- **Do not call this method more than once every 5 seconds.** Frequent calls can cause unwanted SDK behavior.

---

## Related

- [Quickstart](/v1/docs/mapp-intelligence-ios-sdk-v5-quickstart)
- [Initialize the SDK](/v1/docs/mapp-intelligence-ios-sdk-v5-initialize-sdk)
- [Retrieve Active Global Configuration](/v1/docs/mapp-intelligence-ios-sdk-v5-retrieve-active-global-configuration)