Specifies the maximum number of address spaces that Mainframe Access server starts for a multiple-instance group. Additional
address spaces beyond the minimum is started in response to transaction load, up to the maximum allowed by this specification.
Mainframe Access server issues messages (to the XDBOUT data set) when a client request must be queued to wait for an available
processing address space. Increase the MAXIMUM value (by 1) when you observe frequent queueing of client requests. Specify
a value from 1 to 10.