allowStrictAvailabilityUpdates property
If allow_availability_updates is enabled, items are automatically updated in all your Shopping target countries.
By default, availability updates will only be applied to items that are 'out of stock' on your website but 'in stock' on Shopping. Set this to true to also update items that are 'in stock' on your website, but 'out of stock' on Google Shopping. In order for this field to have an effect, you must also allow availability updates.
Implementation
core.bool? allowStrictAvailabilityUpdates;