RegisterCallbackResult

Description

Returns the success or failure of EService to verify that the external server exists (is contactable) and is working properly.

Success Mode

All the failure fields are set to null, indicating that there were no errors generated while testing the callback interface instance.

Failure Modes

One or more failure fields will be populated with a failure object (will contain a non-null reference) indicating the nature of the failure, with relevant information.

Type	Description
AccessDeniedFailure	The username or password was incorrect, or lacked the right to complete this function.
CallbackAlreadyRegisteredFailure	This particular interface has already been registered on EService. You must first de-register the interface before calling this method, by calling the unRegisterCallback method.
InvalidCallbackVersionFailure	The specified version of the callback interface instance, is not a valid CallbackVersion.