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it map where each bit represents the presence or absence
of a specific RIS Data Object.
E ach “1” in the object map indicates the presence of
the corresponding object in the
message,
and each “0” indicates the absence of the object. Any additional
object may be
adde d to the message simply by marking the Object bit map and
placing the objects in
the correct sequence in part 3 of the message. There are four extra
bits that are reserved
for implementer definition in the object bitmap. These
extra bits can be utilized to send
implementation
specific objects or data elements that are not necessarily compliant with
RIS Part 3.
4.9.3.4 PART 4
Part 4 contains transaction specific data elements that
are unique to the type of the
message such as the cardholder personal information in a “PICC Registration” message.
4.9.4 Message Types
R IS Part 4 provides the following six main
message categories with unique individual
messages within the each
category.
• CID Transaction
Messages
• PICC Scheme Control
Messages
• Interface to Transit Benefits Processors
• Interface to Other Clearing houses
• ISO 8583 Interchange message specifications
• ACH – Automated Clearing house messages
4.9.4.1 CID Transaction
Messages
CID Transaction messages include the following
three categories of transactions that are
based on the CID to PICC interactions:
• PICC Initialization messages include such card activities as initialization,
issuance, registration, card inquiry, and limited use card initialization
• Load and Unload messages include all direct load and autoload activities
performed on the card
• Fare payment (Usage) messages document in- and out-of-region card use for all
common fare product types available in the US.
The Part 1 of the CID Transaction Messages contains twelve
data elements as illustrated
in Exhibit 4.9-2.
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