Must be the first field in the repeating group

Can be repeated multiple times if message is related to multiple symbols

Can be repeated multiple times if message is related to multiple symbols

Can be repeated multiple times if message is related to multiple symbols

Must be specified if a Future or Option. If a Future:Symbol, SecurityType, and MaturityMonthYear are required. If an Option:Symbol, SecurityType, MaturityMonthYear, PutOrCall, and StrikePrice are required

Specifies the month and year of maturity. Required if MaturityDay is specified

Can be used in conjunction with MaturityMonthYear to specify a particular maturity date

For Options

For Options

For Options

For Fixed Income, Convertible Bonds, Derivatives, etc. Note: If used, quantities should be expressed in the "nominal" (e.g. contracts vs. shares) amount

For Fixed Income

Can be used to identify the security

Can be repeated multiple times if message is related to multiple symbols

Must be set if EncodedIssuer field is specified and must immediately precede it

Encoded (non-ASCII characters) representation of the Issuer field in the encoded format specified via the MessageEncoding field

Can be repeated multiple times if message is related to multiple symbols

Must be set if EncodedSecurityDesc field is specified and must immediately precede it

Encoded (non-ASCII characters) representation of the SecurityDesc field in the encoded format specified via the MessageEncoding field