Property	On Types	Description
answerCount	Question	The number of answers this question has received.
artEdition	VisualArtwork	The number of copies when multiple copies of a piece of artwork are produced - e.g. for a limited edition of 20 prints, 'artEdition' refers to the total number of copies (in this example "20").
byMonth	Schedule	Defines the month(s) of the year on which a recurring Event takes place. Specified as an Integer between 1-12. January is 1.
byMonthDay	Schedule	Defines the day(s) of the month on which a recurring Event takes place. Specified as an Integer between 1-31.
byMonthWeek	Schedule	Defines the week(s) of the month on which a recurring Event takes place. Specified as an Integer between 1-5. For clarity, byMonthWeek is best used in conjunction with byDay to indicate concepts like the first and third Mondays of a month.
clipNumber	Clip	Position of the clip within an ordered group of clips.
collectionSize	Collection	The number of items in the Collection.
commentCount	CreativeWork	The number of comments this CreativeWork (e.g. Article, Question or Answer) has received. This is most applicable to works published in Web sites with commenting system; additional comments may exist elsewhere.
downvoteCount	Comment	The number of downvotes this question, answer or comment has received from the community.
episodeNumber	Episode	Position of the episode within an ordered group of episodes.
issueNumber	PublicationIssue	Identifies the issue of publication; for example, "iii" or "2".
maximumAttendeeCapacity	Event  or Place	The total number of individuals that may attend an event or venue.
maximumEnrollment	EducationalOccupationalProgram	The maximum number of students who may be enrolled in the program.
maximumPhysicalAttendeeCapacity	Event	The maximum physical attendee capacity of an Event whose eventAttendanceMode is OfflineEventAttendanceMode (or the offline aspects, in the case of a MixedEventAttendanceMode).
maximumVirtualAttendeeCapacity	Event	The maximum virtual attendee capacity of an Event whose eventAttendanceMode is OnlineEventAttendanceMode (or the online aspects, in the case of a MixedEventAttendanceMode).
merchantReturnDays	MerchantReturnPolicy  or MerchantReturnPolicySeasonalOverride	Specifies either a fixed return date or the number of days (from the delivery date) that a product can be returned. Used when the returnPolicyCategory property is specified as MerchantReturnFiniteReturnWindow.
numAdults	LodgingReservation	The number of adults staying in the unit.
numChildren	LodgingReservation	The number of children staying in the unit.
numConstraints	ConstraintNode	Indicates the number of constraints property values defined for a particular ConstraintNode such as StatisticalVariable. This helps applications understand if they have access to a sufficiently complete description of a StatisticalVariable or other construct that is defined using properties on template-style nodes.
numTracks	MusicPlaylist	The number of tracks in this album or playlist.
numberOfBathroomsTotal	Accommodation  or FloorPlan	The total integer number of bathrooms in some Accommodation, following real estate conventions as documented in RESO: "The simple sum of the number of bathrooms. For example for a property with two Full Bathrooms and one Half Bathroom, the Bathrooms Total Integer will be 3.". See also numberOfRooms.
numberOfCredits	Course  or EducationalOccupationalProgram	The number of credits or units awarded by a Course or required to complete an EducationalOccupationalProgram.
numberOfEpisodes	CreativeWorkSeason  or RadioSeries  or TVSeries  or VideoGameSeries	The number of episodes in this season or series.
numberOfItems	ItemList	The number of items in an ItemList. Note that some descriptions might not fully describe all items in a list (e.g., multi-page pagination); in such cases, the numberOfItems would be for the entire list.
numberOfPages	Book	The number of pages in the book.
numberOfSeasons	RadioSeries  or TVSeries  or VideoGameSeries	The number of seasons in this series.
offerCount	AggregateOffer	The number of offers for the product.
pageEnd	Article  or Chapter  or PublicationIssue  or PublicationVolume	The page on which the work ends; for example "138" or "xvi".
pageStart	Article  or Chapter  or PublicationIssue  or PublicationVolume	The page on which the work starts; for example "135" or "xiii".
partySize	FoodEstablishmentReservation  or TaxiReservation	Number of people the reservation should accommodate.
playersOnline	GameServer	Number of players on the server.
position	CreativeWork  or ListItem	The position of an item in a series or sequence of items.
productReturnDays	ProductReturnPolicy	The productReturnDays property indicates the number of days (from purchase) within which relevant product return policy is applicable.
ratingCount	AggregateRating	The count of total number of ratings.
remainingAttendeeCapacity	Event	The number of attendee places for an event that remain unallocated.
repeatCount	Schedule	Defines the number of times a recurring Event will take place.
requiredMaxAge	PeopleAudience	Audiences defined by a person's maximum age.
requiredMinAge	PeopleAudience	Audiences defined by a person's minimum age.
reviewCount	AggregateRating	The count of total number of reviews.
seasonNumber	CreativeWorkSeason	Position of the season within an ordered group of seasons.
totalHistoricalEnrollment	Course	The total number of students that have enrolled in the history of the course.
totalJobOpenings	JobPosting	The number of positions open for this job posting. Use a positive integer. Do not use if the number of positions is unclear or not known.
typicalCreditsPerTerm	EducationalOccupationalProgram	The number of credits or units a full-time student would be expected to take in 1 term however 'term' is defined by the institution.
upvoteCount	Comment	The number of upvotes this question, answer or comment has received from the community.
userInteractionCount	InteractionCounter	The number of interactions for the CreativeWork using the WebSite or SoftwareApplication.
volumeNumber	PublicationVolume	Identifies the volume of publication or multi-part work; for example, "iii" or "2".
wordCount	Article	The number of words in the text of the Article.

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