Klaviyo only accepts default properties as Profile Properties #7392
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Proposed changes
Checking our integration code, it appears that our Track Event action uses Klaviyo's Create Event API to send data:
Running some tests and I found that Klaviyo's API only accepts sending Klaviyo default properties as Profile Properties.
Merge timing
ASAP once approved
Related issues (optional)
https://segment.atlassian.net/browse/KCS-1849