Message occurrences stored in the data dictionary define informational messages. These messages can be established only through the ADD MESSAGE statement submitted to the DDDL compiler. Such messages can be modified at any time through the DDDL compiler.
Note: For more information, see the CA IDMS IDD DDDL Reference Guide.
Messages stored in the data dictionary can be associated with maps by the mapping facility batch or online compiler. A CA ADS dialog or application program can include statements that cause a map to be redisplayed due to input errors. Error messages are displayed for each field in error in the message field (if any) defined for the map. If a map has no message field, error messages are not displayed and processing continues (with CA ADS the message is displayed on the CA ADS default message screen).
A message can be specified in a map field occurrence generated by the CA IDMS mapping facility and thus be included in a map load module. This type of message does not constitute a message occurrence and can only be modified by using the mapping facility online or batch compilers.
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