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  1. The customer can modify their resting quotes by sending in another Mass Quote message with the same tag 107-SecurityDesc and tag 299-QuoteEntryID.
  2. Unique Quote IDs:
    • Tag 299-QuoteEntryID must be unique per session per day. This unique identifier is the responsibility of the customer and is not validated.
    • Tag 117-QuoteID must be unique per session per day.
    • Tag 302-QuoteSetID must be unique per message.
  3. If there is a resting quote from the same customer with a different tag 299-QuoteEntryID, CME Globex platform rejects incoming quotes and cancels the resting quote for the same instrument.
  4. Incoming quotes replace resting quotes from the same customer provided they have the same tag 299-QuoteEntryID.
  5. A modification of a quote entails changing either or both of the values associated with the price and quantity of one or more sides of a quote.
  6. If you modify price and quantity of a quote by setting both it to '"0', the quote is cancelled.", the new quote will be rejected and the resting quote will be cancelled
  7. Customers may perform the following types of modifications:
    • Modify both sides of an existing quote.
    • Modify one side of an existing quote and leave the opposite side unchanged.
    • Cancel one side of a resting quote and leave the opposite side unchanged.
    • Cancel one side of a resting quote and modify the opposite side.
    • Cancel both sides of a resting quote.
  8. Modify only one side (bid or sell) of a resting quote by using the appropriate bid or offer quantity and price tags in a new Mass Quote message.

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