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"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-03-21 UTC."],[[["The webpage provides documentation for the `Promotion` class within the Google Cloud Retail v2 API, showing the class's methods, properties and functionality."],["The most recent version available for the `Promotion` class is 2.12.0, with older versions down to 1.0.0 also documented on this webpage."],["The `Promotion` class is designed for handling promotion information, which can be used within the Retail v2 API, with the class inheriting from `object` and implementing `IMessage`, `IEquatable`, `IDeepCloneable`, and `IBufferMessage`."],["The `Promotion` class can be constructed either as an empty object or as a clone of an already existing `Promotion` object."],["The `Promotion` class includes a property called `PromotionId` of type string, which is used as an identifier for the promotion and must adhere to specific formatting requirements."]]],[]]
