Question

Why do I receive a 400: Event Name must be one of validation error when sending custom or additional standard event names (like IDS Room Sold or add_to_wishlist) to the Pinterest Conversions API destination in Segment?

Product

Twilio Segment

Environment

Segment Console

Answer

The Pinterest Conversions API destination in Segment only supports a fixed set of predefined event names for the Report Conversion Event action.

The only accepted event values are:

• add_to_cart
• checkout
• lead
• page_visit
• search
• signup
• view_category
• watch_video
• custom (for advertiser-defined custom events)

If you attempt to send any other event name (such as IDS Room Sold, add_to_wishlist, or other standard Pinterest events not included in this list), Segment will return a validation error.

For any custom or advertiser-defined event, you must map the event to the literal value custom. Note that all custom events are grouped together under this single value; there is currently no way to differentiate between distinct custom event types in Pinterest reporting when using this Segment integration.

Additional Information 

• While Pinterest’s native API supports a broader range of standard events, Segment’s Pinterest Conversions API destination integration is currently limited to the predefined list above. There is no separate parameter field available to pass custom, unique event names.
• There is currently no newer version of this destination action that expands the accepted event list or adds support for distinct advertiser-defined event names.
• Reference Link: For more details and configuration guidance, refer to the Segment documentation for Pinterest Conversions API destination.