# Account Validation APIs: Sandbox Testing
source: https://developer.mastercard.com/cross-border-services/documentation/testing/account-validation-apis/index.md

Use this section to test the Account Validation Service APIs in the Sandbox environment.

Select an API below for sandbox test cases, sample requests, and sample responses.

| # |             API             |                               What you can test                               |                                                                  Sandbox Testing                                                                  |
|---|-----------------------------|-------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------|
| 1 | Account Validation API      | Send a bank account validation request and review the response returned.      | [View](https://developer.mastercard.com/cross-border-services/documentation/testing/account-validation-apis/bank-account-validation-api/index.md) |
| 2 | IBAN Generation API         | Send local bank account details and review the IBAN returned in the response. | [View](https://developer.mastercard.com/cross-border-services/documentation/testing/account-validation-apis/bank-iban-generation-api/index.md)    |
| 3 | Bank Information Lookup API | Send a bank code or account number and review the bank details returned.      | [View](https://developer.mastercard.com/cross-border-services/documentation/testing/account-validation-apis/bank-information-lookup-api/index.md) |