The Quote Cancel <Z> message is used by an originator of quotes to cancel quotes.
The Quote Cancel message supports cancelation of:
It is recommended that all Cancel messages be acknowledged using the Quote Status Report <AI> message.
The Quote Cancelation only applies to quotes made by the current FIX user.
Options usage notes:
Normal usage would be to cancel the quotes for a symbol. This is the reason that the use of further nesting similar to the quote is not used in this message. You are able to cancel quotes for specific series by specifying each option series in the repeating group.