---
description: "Learn more about: BinaryOccurrence.Type"
title: "BinaryOccurrence.Type"
---
# BinaryOccurrence.Type

## Definition

Specifies how many times the item is expected to appear in the group.

## Allowed values

|Name|Value|Description|
|------------|--|-------------|
|**BinaryOccurrence.Optional**|0|The item is expected to appear zero or one time in the input.|
|**BinaryOccurrence.Required**|1|The item is expected to appear once in the input.|
|**BinaryOccurrence.Repeating**|2|The item is expected to appear zero or more times in the input.|

## Applies to

* [Binary functions](binary-functions.md)
