Imported from previous forum
In FIX 4.2, I understand that there’s a value for tag 18 (“U”) that refers to Customer Display Instruction Rule 11Ac1-1/4. If the B/D or client populates tag 18 with “U”, I understand this to mean that the recpient of the order should not display the clients limit price and should display a block size order(defined). As I understand it, if this value “U” is not used by the client or B/D sending the FIX instruction, then the recpient should display the limit order price and should not display a block order. Is there anyone who has seen clients or b/d’s using this value.