The SecurityDefinition (d) message is used for the following:
1. Accept the security defined in a SecurityDefinition (d) message.
2. Accept the security defined in a SecurityDefinition (d) message with changes to the definition and/or identity of the security.
3. Reject the security requested in a SecurityDefinition (d) message.
4. Respond to a request for securities within a specified market segment.
5. Convey comprehensive security definition for all market segments that the security participates in.
6. Convey the security’s trading rules that differ from default rules for the market segment.
Added in protocol FIX.4.2
See in: FIX.4.2, FIX.4.3, FIX.4.4, FIX.5.0, FIX.5.0SP1, FIX.5.0SP2.