post https://api-sandbox.cv.gpsrv.com/intserv/4.0/getRelatedAccounts
Use the Get Related Accounts endpoint to retrieve all accounts that are related to the account specified in accountNo. This endpoint returns all accounts with the same owner. If a secondary account is passed, it returns the primary account and other secondaries associated with the same primary.
Status codes
See Global Response Statuses for status codes that are common across endpoints.