Fields documentation for PetFeeInterval

Name	Type	Summery	Remarks
ArticleNumber	String	Pet fee article number.
Id	Int32	Unique Id for the entity. This Id is unchanged throughout the entity's lifetime.
PetFeePerPet	Boolean	True if pet fee applies to each pet.	If true, the fee must be charged for each pet taken to the rental house. Conversely, The customer must inform how many pets are taken during the booking process.
ValidFrom	DateTime	Start date.
ValidTo	Nullable<DateTime>	End date. If null, the interval is seen as having no expiration.