MCX callback

This activity adds a callback to MCX system, which can be routed to MCX agent. The customer's name and number, along with the callback destination number, can be specified. It is required to specify the MCX media server that will handle the callback and the subroutine in MCX that will handle the callback routing.

Note:

If variables are provided in the VariableList, the PersistCallbackVariables value must be set to True in MCX for the variable values to be visible. This option enables the variables to be passed from the MCX Callback activity to MCX.

Table 1. MCX callback action - Inputs
Parameters	Description
CustomerName	Name of the customer to be called.
CustomerNumber	Number of the customer.
CallRecord	JSON object with additional information about the call, such as ani and dnis.
DestinationNumber	Number to be dialed for the callback.
OtherCallbackProperties	Specify the additional properties to include in the callback request as a JSON object. Example: `{ "ClientAvailableFrom": "Mon, 30 Mar 2026 16:42:51 GMT", "CallbackTimeExpiryDuration": "01:30:00", "RequestTimeExpirationDuration": "30" }` Note: `ClientAvailableFrom` – Date and time (UTC) from when the customer would be available. For example, to set this to 2 hours from the current time, use a variable such as `DateUtcAddHour(DateUtcNow(), "2")` and reference it as `"ClientAvailableFrom": "{{StartTime}}"`. `CallbackTimeExpiryDuration` – Duration (HH:MM:SS) for which the customer remains available (e.g., 01:30:00 = 1 hour 30 minutes). `RequestTimeExpirationDuration` – Time in minutes before retrying the request. The default value is 30 minutes.
MediaServer	MCX media server that will handle the callback.
CallbackSubroutine	Subroutine defined in MCX to process and route the callback.
VariableList	List of the names of variables defined in the workflow that will be associated with the callback request. If the variable does not exist in MCX, it will be created.

Table 2. MCX callback action - Outputs
Parameters	Description
Success	Indicates whether the activity was completed successfully (value = True) or not (value = False).
Body	Returns the JSON formatted response from the activity.
StatusCode	HTTP response code for the request.

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