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Destination of the message (1 through 16 characters). Mandatory. Valid values are: 
- U-userid or USERID-userid – Writes the message to the IOA Log file under the specified user ID. userid must be 1 through 8 characters.
 - OPER[–n] – Sends a rollable message to the operator console. n is an optional 3-digit route code. If a route code is not specified, the default routes are Master Console and Programmer Information (1 and 11), and optionally, Control-M/Enterprise Manager. For more detailed information regarding route codes, refer to the IBM publication Routing and Descriptor Codes, GC38-1102.
 - OPER2[–n] – Sends an unrollable, highlighted message to the operator console. n is an optional 3-digit route code. If a route code is not specified, the default routes are Master Console and Programmer Information (1 and 11), and optionally, Control-M/Enterprise Manager. For more detailed information regarding route codes, refer to the IBM publication Routing and Descriptor Codes, GC38-1102.
 - [TSO - loginid | T - loginid] [;Nn | ;Mm | ;NnMm | ;Lname] – Sends the message to the specified ID (groupid or logonid). ID is mandatory. 
 If a groupid is specified, it must be a valid ID found within the IOA Dynamic Destination Table. If a logonid is specified, it must be 1 through 7 characters.  An optional second value, indicating the computer and/or node (such as Mm) of the TSO logonid, can be specified, as follows:  Under JES2:  Valid values are: Nn, Mm or NnMm, where:  – m is the machine ID (the computer in JES2, not the    4-character SMF system ID). For more information, see    the discussion on specifying IOA CPUs in the description    of the customization process in the INCONTROL for    z/OS Installation Guide. – n is the 1 to 2 character JES/NJE node ID.  Under JES3:    The only valid value is Lname, where Lname is the logical JES name of the machine (that is, the name as used in JES3 command *T, not the SMF system ID).  For more information, see the discussion on specifying IOA CPUs in the description of the customization process in the INCONTROL for z/OS Installation Guide. 
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- U-M:email_dest – Sends a message by e-mail to the recipient identified by the variable (email_dest), which consists of from 1 through 12 characters, and can be any of the following:
 — an e-mail name prefix, based on the full mail name address      that is supplied by the MAILDEST table in the IOA PARM      library — a nickname defined in the MAILDEST destination table — a group name defined in the MAILDEST destination      table - U-S:snmp_dest – Sends an SNMP trap (message) to the recipient identified by snmp_dest.
 snmp_dest consists of from 1 through 12 characters, and can be any of the following: — a host name — an IP address, if it fits in the screen field. Otherwise use a      nickname. — a nickname defined in the SNMPDEST destination table — a group name defined in the SNMPDEST destination table - U-ECS – Sends messages to the Control-M/Enterprise Manager user. For more information on this feature, see "Shouting to Control-M/Enterprise Manager" in General Information for DO SHOUT.
 
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