This is the code from Marriott hotel system. Post for Fun

8 advance deposit pending 
C advance deposit 
9 guaranteed reservation 
5 elite check in 
4 wait status 
I in house status 
O out of house status 
D cancelled reservation 
s share status 
H house account 
7 volunteer or must walk status 
3 block/ room change 
2 do not walk 
PR presidential suite 
DX deluxe suite 
AC accessible room 
CO connecting room 
BY bay view 
CV city view 
CL concierge level 
KG king bed 
HS hospitality suite 
DB double beds 
NT north tower 
SO south tower 
EX executive suite 
FM feather free room 
73 73 series, bay view, corner room, king bed 
40 40 series, city view, corner room, double bed 
A1 rooms side by side 
A4 amenity to room 
A5 accessible room 
K1 King room gtd 
P6 platinum card member 
P8 pets in room 
U1 upgrade please 
B1 req balcony 
B6 gtd bayview room 
B9 bayview rqst 
L1 req lobby level room 
L2 req low floor 
L3 req late check out 
L4 late arrival 
Q1 req quite room 
PS package selfpark 
PV package valet parking 
SP 1 self parked car 
VP 1 valet parked car 
TP 2 self parked car 
VV 2 valet parked cars 
CP comp parking 
V1 VIP 
PP E-concierge 
C1 req connecting rooms 
C2 req crib 
C4 req concierge level 
C7 complimentary room 
H1 req high floor 
M1 silver member 
M4 do not move 
R1 req rollaway 
R2 rate change required 
D1 req direct bill 
D4 gtd two double beds 
D7 do not show rm/tax 
D9 do not disp. folio 
I2 id required 
I5 cc no swipe 
N1 req near elevator 
1N usa today 
2N wall street journal 
N6 req king bed 
N7 req 2 dbl beds 
R4 req fridge 
S1 req stay over 
S3 sign all charges 
S4 sign room and tax 
X1 gold member 
X4 platinum premier member 
E1 req early check in 
E2 no express check out 
E5 each pays own 
E9 express check in 
J1 guest's first stay 
O8 special occasion 
T3 tax exempt 
T8 req south tower 
Y1 marriott rewards member




Give credit to :http://quizlet.com/5933412/marriott-flash-cards/

That's not how it works. Calling a property and asking them to put U1 on your reservation will not entitle you to or boost your chances at an upgrade. In fact, depending on who you speak to at the property, awareness of where to put that code, or what you are even talking about will likely be slim to none.

These are internal codes for Marriott's PMS system. They also serve as a quick reference guide when someone at the property is looking at your reservation. Most of this information is passed along directly from MARSHA to the property specific PMS system.

LOL I once call the hotel for upgrade and they reply me put the upgrade request on the list And when I arrived at the hotel, FD agents' computer will see U1. Maybe this makes clear lol

wow what a mixture of codes from various systems....not sure what value there is to the general public....additionally the PMS systems are about to be changed out to a universal (global) system for all brands, I'm certain this will result in at least the PMS codes being changed

PS this is not an all inclusive list of codes.....not even close

having a "U1" doesn't mean you'll get an upgrade, just notes the reservation that the guest has requested one