---
title: ExecInst <18> field – FIX 4.4 – FIX Dictionary – Onix Solutions
description: ExecInst <18> field – FIX 4.4 – FIX Dictionary – Onix Solutions
---

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# ExecInst <18> field – FIX 4.4 – FIX Dictionary

| Messages by MsgType \| Messages by Name \| Fields by Tag \| Fields by Name \| FIX 4.4 \| Home FIX 4.4 : ExecInst <18> field Type: MultipleValueString Used In Description Instructions for order handling on exchange trading floor. If more than one instruction is applicable to an order, this field can contain multiple instructions separated by space. Valid values: 1 = Not held 2 = Work 3 = Go along 4 = Over the day 5 = Held 6 = Participate don't initiate 7 = Strict scale 8 = Try to scale 9 = Stay on bidside 0 = Stay on offerside A = No cross (cross is forbidden) B = OK to cross C = Call first D = Percent of volume (indicates that the sender does not want to be all of the volume on the floor vs. a specific percentage) E = Do not increase - DNI F = Do not reduce - DNR G = All or none - AON H = Reinstate on System Failure (mutually exclusive with Q) I = Institutions only J = Reinstate on Trading Halt (mutually exclusive with K) K = Cancel on Trading Halt (mutually exclusive with L) L = Last peg (last sale) M = Mid-price peg (midprice of inside quote) N = Non-negotiable O = Opening peg P = Market peg Q = Cancel on System Failure (mutually exclusive with H) R = Primary peg (primary market - buy at bid/sell at offer) S = Suspend T = Fixed Peg to Local best bid or offer at time of order (Replaced) U = Customer Display Instruction (RuleAc-/4) V = Netting (for Forex) W = Peg to VWAP X = Trade Along Y = Try to Stop Z = Cancel if Not Best a = Trailing Stop Peg b = Strict Limit (No Price Improvement) c = Ignore Price Validity Checks d = Peg to Limit Price e = Work to Target Strategy *** SOME VALUES HAVE BEEN REPLACED - See: "Appendix 6-F: 16.Replaced "Fixed Peg to Local best bid or offer at time of order" value from ExecInst (tag 18) Field [Replaced in FIX 4.4]" *** Used In Execution Report <8> New Order Multileg <AB> Multileg Order Cancel/Replace <AC> Trade Capture Report <AE> New Order Single <D> New Order List <E> Order Cancel/Replace Request <G> New Order Cross <s> Cross Order Cancel/Replace Request <t> Market Data - Snapshot/Full Refresh <W> Market Data - Incremental Refresh <X> |
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