The field must be a UTF-8 encoded string with a length limit of 1,000
characters. Otherwise, an INVALID_ARGUMENT error is returned.
This should not be set when using the client side event reporting with
GTM or JavaScript tag in
[UserEventService.CollectUserEvent][google.cloud.discoveryengine.v1.UserEventService.CollectUserEvent]
or if
[UserEvent.direct_user_request][google.cloud.discoveryengine.v1.UserEvent.direct_user_request]
is set.
Highly recommended for logged-in users. Unique identifier for logged-in
user, such as a user name. Don't set for anonymous users.
Always use a hashed value for this ID.
Don't set the field to the same fixed ID for different users. This mixes
the event history of those users together, which results in degraded
model quality.
The field must be a UTF-8 encoded string with a length limit of 128
characters. Otherwise, an INVALID_ARGUMENT error is returned.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThe \u003ccode\u003eUserInfo\u003c/code\u003e class in the Discovery Engine v1 API provides a structure for representing information about an end-user.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eUserInfo\u003c/code\u003e class implements several interfaces, including \u003ccode\u003eIMessage\u003c/code\u003e, \u003ccode\u003eIEquatable\u003c/code\u003e, \u003ccode\u003eIDeepCloneable\u003c/code\u003e, and \u003ccode\u003eIBufferMessage\u003c/code\u003e, allowing for advanced usage and operations.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eUserInfo\u003c/code\u003e has two key properties: \u003ccode\u003eUserAgent\u003c/code\u003e (for the user's HTTP user agent string, limited to 1000 characters) and \u003ccode\u003eUserId\u003c/code\u003e (a unique, hashed identifier for logged-in users, limited to 128 characters).\u003c/p\u003e\n"],["\u003cp\u003eThere are several versions available for the API, with the latest being version 1.6.0 and version 1.5.0 being presented in this document.\u003c/p\u003e\n"]]],[],null,[]]
