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rdisp/rfc_check 
In this parameter you can set the level of detail of the check made by the RFC server dispatcher. The dispatcher checks whether sufficient dialog work processes are free for processing asynchronous RFC calls.
The number of available dialog work processes depends on the number of free dialog work processes and on the number of work processes that must be kept free for the dialog application. (Compare with rdisp/rfc_min_wait_dia_wp).
If no work process is free, the request is placed in the queue and processed later.
The check can be set at the following levels:
Level 0: no check
Level 1: monitors the start of all asynchronous RFCs
Level 2: Monitors, additionally to level 1, all RFCs started anew from asynchronous RFC sessions. This includes synchronous RFCs. So that applications that transmit a lot of RFCs can run at this level, the number of dialog processes used for RFCs may have to be increased. (rdisp/rfc_min_wait_dia_wp may have to be reduced).
Level 3: monitors all RFCs (synchronous and asynchronous).
Unit: Whole number between 0 and 3
Default value: 1
