The value must be a UTF-8 encoded string with a length limit of 128
characters, and match the pattern: [a-zA-Z][a-zA-Z0-9_]*. For example,
id0LikeThis or ID_1_LIKE_THIS. Otherwise, an INVALID_ARGUMENT error is
returned.
Corresponds to Google Merchant Center property
promotion_id.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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 latest version of the \u003ccode\u003eGoogle.Cloud.Retail.V2.Promotion\u003c/code\u003e class is 2.12.0, and previous versions are also available, ranging back to 1.0.0.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003ePromotion\u003c/code\u003e class is part of the \u003ccode\u003eGoogle.Cloud.Retail.V2\u003c/code\u003e namespace, within the \u003ccode\u003eGoogle.Cloud.Retail.V2.dll\u003c/code\u003e assembly.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003ePromotion\u003c/code\u003e class implements multiple interfaces including \u003ccode\u003eIMessage\u003c/code\u003e, \u003ccode\u003eIEquatable\u003c/code\u003e, \u003ccode\u003eIDeepCloneable\u003c/code\u003e, and \u003ccode\u003eIBufferMessage\u003c/code\u003e, and inherits members from the \u003ccode\u003eobject\u003c/code\u003e class.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003ePromotion\u003c/code\u003e class can be constructed either as a new instance with the \u003ccode\u003ePromotion()\u003c/code\u003e constructor or as a copy using the \u003ccode\u003ePromotion(Promotion other)\u003c/code\u003e constructor.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003ePromotion\u003c/code\u003e class contains a \u003ccode\u003ePromotionId\u003c/code\u003e property of type string, which represents the ID of the promotion, and has constraints regarding length and character composition.\u003c/p\u003e\n"]]],[],null,[]]
