If your application uses the storeData or storeEvent actions, you can use the setStoreErrorCallback action to handle failures. This is useful for applications that make a large number of store calls where high performance is important and acknowledgement for an individual store operation call is not required. A single setStoreErrorCallback action can handle the failure of multiple store calls. The setStoreErrorCallback action is defined as follows:

Calls to storeData and storeEvent actions return unique integer identifiers; use these identifiers in the setStoreErrorCallback action. The first integer specifies the indentifier of the first store action where an error occurred; the second integer specifies the indentifier of the last store action error. callback specifies the name of the user-defined error handling action.