In Shopify, the desired delivery date is often obtained on the cart screen, but if the customer leaves the checkout screen and resumes the next day or later, the desired delivery date may be outside the specified range. This can be difficult to handle automatically, so it is a post-event response, but this is an example of how to detect and respond based on the notification content.
Cases where the earliest delivery date was specified on the shopping cart screen, but the purchase itself was made the next day or later, resulting in an unavailable delivery date being set.
[Example of response] Send a purchase completion email to warn the customer about the change in the desired delivery date, and then contact them later.
