Determine VMware activity result values VMware activities communicate with vCenter through a MID Server. When a VMware activity sends a request, the MID Server sends a response to the ECC Queue. All VMware activities set their activity.result value based on the payload of the response from the MID Server. If this payload contains an error, the activity result value is failure. If the payload contains no error, the activity result value is success. Some activities, such as Delete Snapshot, specify additional result values.