Enrolling the same dog in the same program twice produces this error message, which I feel is not specific enough since I’m only trying to enroll one dog. A more specific and relevant error message would be “This dog has already been enrolled in this program!”, or even better "Dog has already been enrolled in this program!"

Enrolling the same dog in the same program twice produces this error message, which I feel is not specific enough since I’m only trying to enroll one dog. A more specific and relevant error message would be “This dog has already been enrolled in this program!”, or even better "Dog has already been enrolled in this program!"