UserIdentifierSource

The type of user identifier source for offline Store Sales, click conversion, and conversion adjustment uploads.

Enums
`FIRST_PARTY`	Indicates that the user identifier was provided by the first party (advertiser).
`THIRD_PARTY`	Indicates that the user identifier was provided by the third party (partner).
`UNKNOWN`	Used for return value only. Represents value unknown in this version
`UNSPECIFIED`	Not specified.

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Last updated 2025-12-12 UTC.

`FIRST_PARTY`