Constituent Symbol Mapping

The Constituent Symbol Mapping message is only available on the C1 Exchange. This message is used to communicate which options series (if any) are Constituent Series in a Volatility Settlement Special Opening Quote ( SOQ). The message is identical to the Symbol Mapping message with the addition of the SOQ Identifier field, which is set to the CSMi symbol on which the final settlement SOQ value is disseminated. The Constituent Symbol Mapping message is sent as an unsequenced message with one message sent for each Constituent Series in a continuous loop as bandwidth allows.

The Constituent Symbol Mapping message has the following format:

Table 1. Constituent Symbol Mapping

Field Name	Offset	Length	Type/(Value)	Description
Length	0	1	Binary	Length of this message including this field.
Message Type	1	1	0x9E	Constituent Symbol Mapping Message
Feed Symbol	2	6	Printable ASCII	Symbol right padded with spaces
OSI Symbol	8	21	Printable ASCII	OSI Symbol
Symbol Condition	29	1	Alphanumeric	N = Normal C = Closing Only
Underlying	30	8	Alphanumeric	Symbol of underlying equity right padded with spaces.
SOQ Identifier	38	20	Printable ASCII	Dissemination symbol of the final SOQ right padded with spaces.
Total Length = 58 bytes