Aerosync Test Banks (Aerobank)
Aerosync Test Banks
The production environment contains thousands of banks that a user can connect with, but in the sandbox environment we provide an Aerosync-branded test bank called, "Aerobank" to develop and test against.

Login Credentials
When prompted to log in to Aerobank, use one of the following username/password combinations depending on the scenario you want to test:
Aerobank NonOAuth
This represents the non-oauth flow.
Log in and simulate a successful login, MFA, or incorrect credentials.
| Username | Password | Behavior |
|---|---|---|
sync | no_mfa | Login succeeds immediately — no MFA step |
sync | mfa | Login succeeds, then MFA is required before the account connects |
sync | any other string value | Returns incorrect credentials error, prompts user to try entering credentials again |
MFA Scenario
When you log in with the username: sync & password: mfa, the flow will pause and ask a security question:
"What city were you born in?"
| Answer | Behavior |
|---|---|
correct | MFA passes — account connects successfully |
| any other string value | MFA fails — connection is rejected |
Aerobank OAuth
Simulates an OAuth flow.
| Username | Password | Behavior |
|---|---|---|
sync | no_mfa | Login successful - continues to consent and account selection screens |
sync | any other string value | Returns incorrect credentials error, prompts user to try entering credentials again |
Triggering Error States
Wrong Password at Login
Enter any username/password combination that is not one of the valid pairs above (e.g., sync / wrongpassword, or baduser / no_mfa). The login will be rejected with an invalid credentials error.
Wrong MFA Answer
After logging in with sync / mfa, enter anything other than correct when answering the security question. The MFA step will fail and the connection will be denied.
Linking a bank account to Aeropay
If integrating Aeropay via API, a request to Aeropay's POST /v2/linkAccountFromAggregator endpoint will be necessary to link the bank account to Aeropay. The onSuccess() event data attributes from the Aerosync widget will include a connectionId which should be included in the payload to this endpoint.
Bank Linking LimitsAll Aeropay users are be subject to the following bank limit rules:
- a user cannot link more than 5 unique bank accounts
- a user cannot link the same bank account more than 3 times
We put these guardrails in place to limit fraud/account takeover on our platform.
In our sandbox environment we can set a bank limit override so you can test bank linking many times. You can speak to your designated Solutions Engineer to set this override for any test users on your platform.
Updated about 3 hours ago

