I am testing an Unsubscribe page created with ACS.
I saw that I can unsubscribe multiple times from the same email.
I hoped that after the first unsubscribe, in the next, will be an error.
Is that correct?
A Recipient can unsubscribe multiple times?
Yes, that should not be a problem.
Unsubscribe simply fires an API call to Subscription Service API. Firing the same call for an unsubscribed profile will not have any adverse effect.