I've been building multiple subscriber forms for a client, two in particular that are done with AS2.
The first one uses the client's API ID & List ID correctly to add subscribers.
The second one did not work unless I used the Primary Account Holder's API ID & the client's List ID.
Why would this require a different combination of IDs?
Thanks for the report. With these kinds of issues we really would need more specifics from you to determine the issue - can you please contact us via support so we can follow up?