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

# MappedTrackerDefinition

> v0.20.5

> **MappedTrackerDefinition** = `object`

Defined in: [src/modules/types.ts:433](https://github.com/Forte-Service-Company-Ltd/forte-rules-engine-sdk/blob/40cc8388cecd8ee445b00b9df2b681cff8552ece/src/modules/types.ts#L433)

Definition of a mapped tracker

## Properties

### arrayValueType

> **arrayValueType**: `number`

Defined in: [src/modules/types.ts:445](https://github.com/Forte-Service-Company-Ltd/forte-rules-engine-sdk/blob/40cc8388cecd8ee445b00b9df2b681cff8552ece/src/modules/types.ts#L445)

Array Value Type

***

### initialKeys

> **initialKeys**: `any`\[]

Defined in: [src/modules/types.ts:441](https://github.com/Forte-Service-Company-Ltd/forte-rules-engine-sdk/blob/40cc8388cecd8ee445b00b9df2b681cff8552ece/src/modules/types.ts#L441)

Initial keys

***

### initialValues

> **initialValues**: `any`\[]

Defined in: [src/modules/types.ts:443](https://github.com/Forte-Service-Company-Ltd/forte-rules-engine-sdk/blob/40cc8388cecd8ee445b00b9df2b681cff8552ece/src/modules/types.ts#L443)

Initial values

***

### keyType

> **keyType**: `number`

Defined in: [src/modules/types.ts:437](https://github.com/Forte-Service-Company-Ltd/forte-rules-engine-sdk/blob/40cc8388cecd8ee445b00b9df2b681cff8552ece/src/modules/types.ts#L437)

Type of the key

***

### name

> **name**: `string`

Defined in: [src/modules/types.ts:435](https://github.com/Forte-Service-Company-Ltd/forte-rules-engine-sdk/blob/40cc8388cecd8ee445b00b9df2b681cff8552ece/src/modules/types.ts#L435)

Name of the tracker

***

### valueType

> **valueType**: `number`

Defined in: [src/modules/types.ts:439](https://github.com/Forte-Service-Company-Ltd/forte-rules-engine-sdk/blob/40cc8388cecd8ee445b00b9df2b681cff8552ece/src/modules/types.ts#L439)

Type of the value