Banking Event Queries
Banking event queries retrieve information about specific activities that occur in the Sample Server as a result of banking function requests. Each occurrence of a banking event will be returned only once. The Sample Adapter uses polling notifications to retrieve these events and to generate notification documents.
The Sample Server supports the following banking event queries:
CheckDepositStatusChange
This event query requests a list of checks that have cleared or bounced since the last time the query was made. These events occur as a result of the Clear Check or Bounce Check functions.
UnderBalance
This event query requests a list of accounts that have been overdrawn since the last time the query was made. These events occur as a result of Withdraw or Transfer functions that result in a negative account balance. Note that the function request must have succeeded if the function request was rejected because the debit would exceed the account's credit limit. In this case, no UnderBalance event is recorded.
Because there is no protocol support for the Sample Server client to acknowledge the polling message from the receiving side, a document will not be published with the same message twice. For example, if a document reports that an account has fallen to -10, no other document is published until the amount changes.