====== ORDER STATUS REQUEST [35=H] ======

The Order Status Request message queries the current state of an order.

===== Order Identification =====
**Required:**
  * OrderID (37) - T4-assigned unique ID
  * SecurityID (48) - T4 Market ID  
  * Side (54) - Buy/Sell direction

**Optional:**
  * ClOrdID (11) - Client order ID
  * ClientID (109) - Echoed as MassStatusReqID in response

===== Response Behavior =====
  * Returns Execution Report (35=8) with ExecType=I, PossResend=Y
  * Unknown orders return OrdStatus=U
  * Maximum 50 requests per session

===== Message Specification =====

**Message Direction:** Client → T4

^ Tag ^ Field Name ^ Type ^ Req'd ^ Description ^
| | **Message Header** | | Y | MsgType = H |
| 1 | Account | String | O | Account code |
| 11 | ClOrdID | String | O | Client order ID (max 20 chars) |
| 37 | OrderID | String | Y | T4-assigned order ID |
| 48 | SecurityID | String | Y | T4 Market ID |
| 55 | Symbol | String | O | T4 Contract ID |
| 207 | SecurityExchange | String | O | T4 Exchange ID |
| 167 | SecurityType | String | O | FUT, OPT, STK, SYN, BIN |
| 54 | Side | Char | Y | 0=None, 1=Buy, 2=Sell |
| 109 | ClientID | String | O | Echoed as MassStatusReqID |
| 107 | SecurityDesc | String | O | Security description |
| 1028 | ManualOrderIndicator | Boolean | O | Y=Manual, N=Automated |
| | **Message Trailer** | | Y | |

===== Sample Messages =====

**Note:** Pipe (|) used for readability. Actual FIX messages use SOH (ASCII 01) delimiter.

**Status Request:**
<code>
8=FIX.4.2|9=200|35=H|49=T4Test|56=test|52=20160725-20:39:01.415|
1=_Account_|11=fc-636050440308221244|37=D33CF7F0-206A-48F8-8C8E-22745339FA05|
48=XCME_Eq ES (U16)|54=1|55=ES|207=CME_Eq|109=osr-636050579414153893|
167=FUT|10=123|
</code>

**Status Response:**
<code>
8=FIX.4.2|9=450|35=8|49=test|56=T4Test|50=T4FIX|52=20160725-20:39:01.417|
143=US,IL|97=Y|1=_Account_|11=fc-636050440308221244|41=fr-636050433226127451|
17=D33CF7F0-206A-48F8-8C8E-22745339FA05_9_U|150=I|
37=D33CF7F0-206A-48F8-8C8E-22745339FA05|39=4|48=XCME_Eq ES (U16)|55=ES|
207=CME_Eq|200=201609|59=0|107=E-mini S&P 500 Sep16|54=1|167=FUT|38=1|
40=2|44=215375|912=Y|60=20160725-16:47:19.425|21=1|204=0|
584=osr-636050579414153893|10=234|
</code>

===== Notes =====
  * Malformed messages rejected with Session Reject (35=3)
  * Unknown orders return OrdStatus=U if account unsubscribed or order expired
  * Can query orders from any source (FIX, Front-End, API) using OrderID
  * Complements Order Mass Status Request for bulk queries