This specification contains three functional groupings of trigger events and message definitions. The trigger events within each of the three functional groupings share the same or similar message definitions. For clarity, message definitions shared by multiple trigger events are presented only once.
The first functional grouping of trigger events and message definitions describes placer request transactions. This grouping defines the trigger events and message definitions for transactions from applications acting in a placer application role, and also defines the related filler application response messages. These messages are described in Section 10.2, "PLACER APPLICATION REQUESTS AND TRIGGER EVENTS."
The second functional grouping describes trigger events and message definitions for unsolicited transactions from applications acting in the filler application role. This grouping describes the unsolicited messages originating from an application fulfilling the filler role, and the response messages sent back by applications fulfilling the auxiliary role. These messages are described in Section 10.3, "FILLER APPLICATION MESSAGES AND TRIGGER EVENTS UNSOLICITED."
The final grouping describes query transactions from applications acting in the querying application role, and also defines the related filler application messages used to respond to these queries. These messages are described in section 10.4, "QUERY TRANSACTIONS AND TRIGGER EVENTS."
The notation used to describe the sequence, optionality, and repetition of segments is described in Chapter 2, "Format for defining abstract messages."
This chapter uses the "Action code/unique identifier" mode for updating via repeating segments. For more information on updating via repeating segments. For more information on updating via repeating segments, please see Section 2.23.4, "Modes for updating via repeating segment," in Chapter 2. The definition of the "Action code/unique identifier" update mode can be found in Chapter 2, Section 2.23.4.2, "Action code/unique identifier mode update definition."