The syntax of this message is specified in section

The RunspacePool MUST be in an Opened state (section while processing this message.

The server MUST extract the "ci" (call id) value from the message and use it for sending a response using the RUNSPACE_AVAILABILITY message (section

In response to this message, the server MUST get the available number of Runspaces in the RunspacePool (section and sends a RUNSPACE_AVAILABILITY message (section with appropriate integer value using wxf:ReceiveResponse message (section targeted to the RunspacePool.