subscription_initial_purchase Event

window._upstack('track', 'subscription_initial_purchase', { subscriptionId: 'sub_def456', accountId: 'acct_abc123', planId: 'plan_pro_monthly', planName: 'Pro Plan', value: 9900, currency: 'USD', billingInterval: 'month' });

Property	Type	Required	Description
subscriptionId	string	Yes	Subscription identifier
accountId	string	Yes	Account identifier
planId	string	No	Plan identifier
planName	string	No	Plan display name
value	number	No	Payment amount in cents
currency	string	No	ISO 4217 currency code
billingInterval	string	No	`month` or `year`

Property

Type

Required

Description

subscriptionId

string

Yes

Subscription identifier

accountId

string

Yes

Account identifier

planId

string

Plan identifier

planName

string

Plan display name

value

number

Payment amount in cents

currency

string

ISO 4217 currency code

billingInterval

string

month or year

When to Fire

First subscription charge succeeds

After trial converts (first paid billing period)

When new customer’s initial payment processes

Use subscription_initial_purchase for acquisition metrics and subscription_recurring_purchase for retention/LTV analysis. Together they give a complete picture of subscription revenue.

SDK

PIXEL EVENTS

IDENTITY

AUTOMATIC TRACKING

subscription_initial_purchase Event

JavaScript

Properties

When to Fire

​JavaScript

​Properties

​When to Fire

JavaScript

Properties

When to Fire