Which permission allows external applications to update coupons in a system?

The permission that allows external applications to update coupons in a system is specifically designed for the task at hand, focusing solely on the update capability. This means that external applications can modify existing coupon data without additional permissions to create new coupons or delete existing ones.

This specific permission is crucial for maintaining a streamlined process where external applications can regularly refresh or change coupon details as necessary, without offering them broader abilities that could potentially lead to unwanted alterations or deletions of important data.

In contrast, other options involve more encompassing permissions that include creating or deleting coupons, which goes beyond the scope of just updating. Therefore, choosing the option that only allows for the updating of coupons provides a targeted control mechanism, ensuring that external applications are only permitted to make changes to existing records rather than also creating new ones or removing those that exist. This kind of precision in permission management is especially important for maintaining data integrity and security in systems handling sensitive promotional information like coupons.