---
title: "Character Limits and Data Types"
slug: "mapp-intelligence-ios-sdk-v5-character-limits-data-types"
updated: 2026-04-30T12:08:28Z
published: 2026-04-30T12:08:28Z
canonical: "docs.mapp.com/mapp-intelligence-ios-sdk-v5-character-limits-data-types"
---

> ## 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.

# Character Limits and Data Types

Mapp Intelligence enforces a small set of size and character limits on every tracking request. The iOS SDK passes user-supplied values through verbatim — these limits apply on the server side, so it is your responsibility to stay within them when populating `MI…Parameters` objects.

---

## Encoding

- All tracking requests use UTF-8.
- Input is case-sensitive.

---

## Request and parameter limits

| Limit | Value |
| --- | --- |
| Maximum size of one tracking request | 7 KB |
| Maximum text parameter length | 255 characters per value |
| Multi-value text parameters | Each value can be up to 255 characters; each scalar is stored as one parameter on the server. See [Multi-value parameters](/v1/docs/what-are-multi-value-parameters-and-how-are-they-working). |
| Numeric ("figure") parameter range | `decimal(12, 2)` — ten digits before the decimal point, two after (range −9 999 999 999.99 to 9 999 999 999.99). |

---

## Filtered characters

Mapp Intelligence automatically removes or normalises the following characters during ingest:

- Control characters in the range `0x00`–`0x1f`
- Single quote (`'`) and double quote (`"`)
- `<`, `>`, `\`
- Non-breaking space (`0xA0`) is converted to a regular space
- Multiple consecutive spaces are collapsed to a single space
- Leading and trailing spaces are removed

> [!NOTE]
> If you need to keep specific punctuation (for example in product names), URL-encode the value before passing it to the SDK.

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## Related

- [Default Parameters](/v1/docs/mapp-intelligence-ios-sdk-v5-default-parameters)
- [Object Oriented Tracking](/v1/docs/mapp-intelligence-ios-sdk-v5-object-oriented-tracking)
- [Tracking Request Flow](/v1/docs/mapp-intelligence-ios-sdk-v5-tracking-request-flow)