Orderbook Attribute [X]

This message is sent to provide a specific value that has been set for an orderbook.

Name	Offset	Length	Value	Description
Type	0	1	Alpha	Orderbook Attribute Message identifier: "X"
Timestamp	1	4	Unsigned Integer	Nanoseconds since last ITCH Timestamp "T" message.
Orderbook	5	4	Unsigned Integer	Unique orderbook identifier.
AttributeValue	9	8	Signed Integer	The value that has been set, according to the Type. Decode using the Price Decimals for the orderbook, unless otherwise specified.
AttributeType	17	1	Alpha	Type of attribute that is being referred to in this message. Valid values R = Previous’s days close. Transmitted at start of day. Also transmitted if set by market controller C = Close Price. Transmitted after closing rotation D = ETR upper limit percentage d = ETR lower limit percentage P = AOT upper limit percentage p = AOT lower limit percentage A = AOT reference price B = ETR reference price
Reason	18	1	Alpha	Not used - Reserved for future use.