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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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 represents information about an end user and is available across multiple versions, with 1.6.0 being the latest.\u003c/p\u003e\n"],["\u003cp\u003eThis 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, indicating its capabilities for message handling, equality checks, deep cloning, and buffered operations.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eUserInfo\u003c/code\u003e class includes two main properties: \u003ccode\u003eUserAgent\u003c/code\u003e, which represents the user agent string from the HTTP header, and \u003ccode\u003eUserId\u003c/code\u003e, which is a unique identifier for logged-in users, preferably hashed for privacy.\u003c/p\u003e\n"],["\u003cp\u003e\u003ccode\u003eUserInfo\u003c/code\u003e is constructed using the default constructor, or a copy constructor, taking another instance of \u003ccode\u003eUserInfo\u003c/code\u003e as a parameter.\u003c/p\u003e\n"],["\u003cp\u003eThe class inherits from \u003ccode\u003eobject\u003c/code\u003e, having access to the \u003ccode\u003eGetHashCode\u003c/code\u003e, \u003ccode\u003eGetType\u003c/code\u003e, and \u003ccode\u003eToString\u003c/code\u003e methods.\u003c/p\u003e\n"]]],[],null,[]]
