Updates a discount rule's properties.
The updateDiscountRule() function returns a Promise that resolves when the specified discount rule's properties are updated.
Each time the discount rule is updated, revision increments by 1. The existing revision must be included when updating the discount rule. This ensures you're working with the latest discount rule information, and it prevents unintended overwrites.
This method may require higher-level permissions than the caller has, based on their identity and roles and permissions. In these cases, you can ensure the method is called with the required level of authorization by using one of the following:
Discount rule ID.
Discount rule info.
This method doesn't return any custom errors, but may return standard errors. Learn more about standard Wix errors.