Core Event Properties

Core properties are the foundational fields used across most tracking events. These are typically required or strongly recommended for proper attribution and reporting.

Properties

value

Monetary value of the event.

currency

ISO 4217 currency code.

transactionId

Unique order identifier.

orderName

Human-readable order number.

Quick Reference

Property	Type	Required	Description
`value`	number	Yes for purchase, lead, subscribe	Monetary value of the event
`currency`	string	Yes (when value is set)	ISO 4217 currency code (USD, EUR, GBP)
`transactionId`	string	Yes for purchase/refund	Unique order identifier
`orderName`	string	No	Human-readable order number shown to customers

Example

window._upstack('track', 'purchase', {
  value: 149.99,
  currency: 'USD',
  transactionId: 'ORD-2026-001',
  orderName: '#1042',
  items: [/* ... */]
});

For Purchase events, value should match the order total you want reported to ad platforms.

Overview value

⌘I

SDK

PIXEL EVENTS

IDENTITY

AUTOMATIC TRACKING

Properties

value

currency

transactionId

orderName

Quick Reference

Example

​Properties

value

currency

transactionId

orderName

​Quick Reference

​Example

Properties

Quick Reference

Example