Return and reason codes

When control returns from the extended MCS console removal service (module CNZM1ERF), the return code appears in register 15, and the reason code in register 0:

Hexadecimal Return Code	Hexadecimal Reason Code	Meaning and Action
00	00	Successful processing.
04	400	All extended MCS consoles matching the wildcard pattern are active. No console definitions were removed.
04	404	One or more extended MCS consoles matching the wildcard pattern are active. Console definitions were removed for the consoles that were not active.
04	408	No extended MCS consoles were found matching the wildcard pattern. No console definitions were removed.
04	40C	There was not enough available storage to complete the request. Only the extended MCS consoles listed in message CNZ4002I had their console definitions removed.
08	800	Caller is not authorized. Caller is not in supervisor state.
08	804	Caller is not authorized. Caller is not in key zero.
08	808	Caller is in cross memory mode.
08	80C	Caller is running in SRB mode.
08	810	Requested console is active.
08	814	Requested console is not an extended MCS console.
08	818	Requested console is not defined.
08	820	Incorrect input was specified.
10	1000	An unexpected ABEND occurred.
10	1004	Storage could not be obtained.
10	1008	Resources could not be obtained.
10	100C	Resources could not be released.
10	1010	Unexpected return code from CONVCON.