FACILITY MESSYS
100,PATHOPEN,path already established
101,MESNUM,maximum message number reached
102,NOTFOUND,path not found to that task in table lookup
103,NOPRIV,no privilege for establishing path
104,TIMEOUT,timeout occurred in messys_receive
105,RESCHED,reschedule occurred in messys_receive
106,ASTINT,AST interrupt occurred in messys_receive
107,EXTINT,external interrupt occurred in messys_receive
108,PARAMREQ,request to user interface for parameter
109,PARAMREP,reply from user interface giving parameter
110,INFORM,message sent to user interface for display
111,LISTUNDER,message list depth less than zero, list corrupted
112,LISTEMPTY,message list depth and contents in disagreement:-corruption
113,BADPATH,path outside range of possible path values
114,NOTASK,failed to open path to named task
115,TOOLONG,task name too long
116,SYNC,synchronisation message - this should never be reported
117,NOMSG,message not found in list - should never be reported
118,IVACKINIT,invalid ACK_INIT message received
119,NONODE,failed to translate SYS$NODE
120,NONET,ADAMNET process not available
121,TOOMACH,attempt to open too many network links
122,NETTIME,timeout on attempted network call
123,IVNETCALL,invalid response received to network call
124,BADMESS,messid outside range of possible messid values
125,NOMESS,messid value is not valid
126,TRANSFAIL,other task unable to start transaction
127,IVCOMMSG,invalid type of message received on command_q
128,TRIGGER,message sent to trigger originating task
129,KICK,kick message detected by MESSYS_RECEIVE
130,SYNCREP,reply to SYNC message
200,COMFULL,cannot open another path, common block full
201,NONEXIST,non-existent path pointer
202,MSGFUNC,error in message function code
203,INTFLG,error in setting interrupt flag
204,FLAGS,unknown flag set
205,BUFOV,message buffer overflow
300,NOLISPACE,no space left on messys message list, message lost
