# OpenapiClient::Expiration ## Properties Name | Type | Description | Notes ------------ | ------------- | ------------- | ------------- **month** | **String** | Month of the card expiration date in MM format. | **year** | **String** | Year of the card expiration date in YY or YYYY format. | ## Code Sample ```ruby require 'OpenapiClient' instance = OpenapiClient::Expiration.new(month: 03, year: 21) ```