Variable CatalogItemAvailabilityUpdate_ReasonValuesConst
CatalogItemAvailabilityUpdate_ReasonValues: readonly [
"out_of_stock",
"back_in_stock",
"content_unavailable",
"content_available",
"promotion_start",
"promotion_end",
"time_window_started",
"time_window_expired",
"buyer_request",
"other",
] = ...
single | CatalogItemAvailabilityUpdate.reason