This was answered 5 years ago, but i can't seem to find anything more recent, so i dont know if it has changed.
Can 1 Authorize.Net account have more than 1 bank account?
MyStores has 3 locations. Each Location has its own bank.
Can i use MyStores Authorize.Net account for all three banks?
12-12-2017 08:59 AM
For billing purposes there can only be one bank account per account.
One option is to have separate Authorize.Net accounts for each MyStore.
12-12-2017 04:02 PM