---
title: "Character Limits and Data Types"
slug: "mapp-intelligence-android-sdk-v5-character-limits-data-types"
description: "Reference character limits, request size rules, filtered characters, and supported data types in Mapp Intelligence Android SDK v5."
updated: 2026-04-24T07:51:46Z
published: 2026-04-24T07:51:46Z
canonical: "docs.mapp.com/mapp-intelligence-android-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

This page summarizes the character rules, size limits, and data types that apply to Android SDK tracking requests.

Use it as a reference when you define custom parameters or process user-generated input before sending it through the SDK.

## General rules

- The SDK uses UTF-8 character encoding.
- Request content is case-sensitive.
- A single tracking request must not exceed `7 KB`.

## Supported parameter data types

**Text parameters**

- Maximum length: `255` characters per value.
- If you use multi-value parameters, each individual value can still contain up to `255` characters.

**Figure parameters**

- Supported format: `decimal(12,2)`
- Valid range: `-9999999999.99` to `9999999999.99`

## Filtered characters and formatting

The SDK automatically normalizes or removes some characters during request processing.

- Characters in the range `0x00-0x1f` are filtered out.
- Single quotes, double quotes, angle brackets, and backslashes are filtered out.
- `0xA0` is replaced with a space.
- Multiple spaces are reduced to a single space.
- Leading and trailing spaces are removed.

## When to check this page

- Before defining custom text or figure parameters
- When sanitizing user input before tracking
- When debugging request truncation or unexpected value changes

Related: [Default Parameters](https://docs.mapp.com/docs/en/default-parameters), [Object Oriented Tracking](https://docs.mapp.com/docs/en/object-oriented-tracking)