This is a reusable definition. Requiredness is relative to this structure; its use and conditions in a message remain on that message's page. Version links browse the other dictionary, not an assumed equivalent component.
Order identifier assigned by client if order(s) were electronically delivered over FIX (or otherwise assigned a ClOrdID) and executed. If order(s) were manually delivered (or otherwise not delivered over FIX) this field should contain string "MANUAL". Note where an order has undergone one or more cancel/replaces, this should be the ClOrdID of the most recent version of the order.
Required when NoOrders(73) > 0 and must be the first repeating field in the group.
Quantity of this order that is being booked out by this message (will be equal to or less than this order's OrderQty)
Note that the sum of the OrderBookingQty values in this repeating group must equal the total quantity being allocated (in Quantity (53) field)