This Natural profile parameter can be used to set the RPC buffer compression.

Possible settings	0	No compression will be performed.
	1	The send buffer contains modifiable fields and output fields and the format buffer. The reply buffer contains modifiable fields and input fields.
	2	Same as COMPR=1, additionally the reply buffer also contains the format buffer.
Default setting	1
Dynamic specification	yes
Specification within session	yes	At runtime, this value can be overwritten using the Parameter Maintenance function of the SYSRPC utility.

Notes:

1. COMPR is specified on the client side only.
2. COMPR is effective only, if the automatic Natural RPC execution is used (AUTORPC=ON) and the CALLNAT is executed without an interface object. If an interface object is used, the compression has already been set during interface object generation. For details, see Using Compression in the Natural RPC (Remote Procedure Call) documentation.
3. For further information, see the Natural RPC (Remote Procedure Call) documentation.