It happens because of combined search results. If the first search / session is displaying on mobile the combined search result, the 2nd session is from the expanded number of itineraries shown to a traveller. Both share the same correlation ID (request ID), but the Travel Rankings PUSH UUIDs are different because 2 distinct API calls are made to a partner Meta API.
We are introducing daily content suppression updates and a Partner Portal dashboard for full details across most Flight content.
If any content was suppressed in the last day, you will receive a daily message with a link.
For a limited time, both the new and current channels will be used, duplicate messages can be matched by ticket number.