The syntax of this message is specified in section

The RunspacePool MUST be in the 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 a RUNSPACE_AVAILABILITY message (section

In response to this message, the server MUST update the minimum number of Runspaces in the RunspacePool (section value and send a RUNSPACE_AVAILABILITY message (section with the appropriate Boolean value using the wxf:ReceiveResponse message (section targeted to the RunspacePool.