Which account types are supported in the Sandbox? March 13, 2019 15:57 Updated Follow finAPI XS2A Sandbox currently provides test data for checking accounts. For a detailed account of Sandbox test data, please refer to Sandbox Test Accounts and Test Data. Related articles Which consent types are supported? 09. Sandbox Test Accounts and Test Data Which payment types are supported by the Sandbox? How are TPPs authenticated? Which format is used for account information?