Event Taxonomy Limitations

Category, Action, Label, Value

Data Type: If the data type does not match the designated format, the event itself is not stored.
Max Length: Anything that exceeds the designated maximum length is cut short to fit the maximum length.

Semantic Event Properties (Semantic Attributes)

Data Type: If a "semantic attribute" (e.g. transactionID, totalValue) does not match the designated format, the event itself is not stored. However, if individual data fields of "Semantic Event Properties" (e.g.products.productID, products.name) do not match the designated type, the event is stored excluding the problematic field.
Max Length: There are no length limitations for "semantic attributes". However, the value of "semantic attributes" are cut short if the length exceeds its limitations.

Custom Event Properties (Custom Attributes)

Data Type: If the data type does not match the designated format, the event itself is not stored.
Max Length: If the length exceeds the designated maximum length, the value is stored as ERROR_MAX_LENGTH_EXCEEDED.

Type and Max Length for Each Event Data Field

Field Name	Child Field Name	Field Key	Type	Max Length
Category		category	string	128
Action		action	string	128
Label		label	string	128
Value		value	float	64 bit float
Custom Event Properties		customAttributes	map	2048
Semantic Event Properties		semanticAttributes	map
Semantic Event Properties	Currency	currency	string	1024
Semantic Event Properties	Product List ID	productListID	string	1024
Semantic Event Properties	Cart ID	cartID	string	1024
Semantic Event Properties	Transaction ID	transactionID	string	1024
Semantic Event Properties	Transaction Type	transactionType	string	1024
Semantic Event Properties	Transaction Paired Event Category	transactionPairedEvenCategory	string	1024
Semantic Event Properties	Search Query	query	string	1024
Semantic Event Properties	Wish List ID	wishListID	string	1024
Semantic Event Properties	Content ID	contentID	string	1024
Semantic Event Properties	Content Name	contentName	string	1024
Semantic Event Properties	Level	level	string	1024
Semantic Event Properties	In App Purchased	inAppPurchased	boolean
Semantic Event Properties	Total Revenue	totalValue	float	64 bit float
Semantic Event Properties	Rating Value	ratingValue	float	64 bit float
Semantic Event Properties	Max Rating Value	maxRatingValue	float	64 bit float
Semantic Event Properties	Score	score	float	64 bit float
Semantic Event Properties	Transaction Paired Event Timestamp	transactionPairedEventTimestamp	int	64 bit float
Semantic Event Properties	Total Quantity	totalQuantity	int	64 bit float
Semantic Event Properties	Product List	products	arrray
Semantic Event Properties	Product ID	products[0].productID	string	1024
Semantic Event Properties	Product Name	products[0].name	string	1024
Semantic Event Properties	Product Price	products[0].price	float	64 bit float
Semantic Event Properties	Product Quantity	products[0].quantity	int	64 bit float
Semantic Event Properties	Product Currency	products[0].currency	string	1024
Semantic Event Properties	Product Position	products[0].position	int	64 bit float