# PagerDuty::Schedules::Schedule User ## Syntax To declare this entity in your AWS CloudFormation template, use the following syntax: ### JSON
{ "Type" : String, "Id" : String, "Summary" : String, "HtmlUrl" : String, "Self" : String }### YAML
Type: String Id: String Summary: String HtmlUrl: String Self: String## Properties #### Type A string that determines the schema of the object. This must be the standard name for the entity, suffixed by _reference if the object is a reference./, =, +, and -. _Required_: Yes _Type_: String _Allowed Values_:
user_reference
_Update requires_: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)
#### Id
_Required_: Yes
_Type_: String
_Minimum Length_: 1
_Update requires_: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)
#### Summary
A short-form, server-generated string that provides succinct, important information about an object suitable for primary labeling of an entity in a client. In many cases, this will be identical to name, though it is not intended to be an identifier.
_Required_: No
_Type_: String
_Update requires_: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)
#### HtmlUrl
A URL at which the entity is uniquely displayed in the Web app.
_Required_: No
_Type_: String
_Update requires_: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)
#### Self
A URL at which the entity is uniquely displayed in the Web app.
_Required_: No
_Type_: String
_Update requires_: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)