Grocery shopping at my local Walmart the other day another slip came attached to my receipt printed with a list of all available Action Codes. The FAQ mentions using code 70 when training a cashier to load Serve. It's in the list!

AVAILABLE ACTION CODE LIST

1 = COMPLETE TRANSACTION VOID
2 = TERMINAL STATISTICS REPORT
3 = TERMINAL ACCOUNTING REPORT
4 = DEPARTMENT TOTALS
6 = PRICE INQUIRY
7 = RESET TRANSACTION NUMBER
9 = TRAINING MODE
10 = OPERATOR PERFORMANCE
13 = PAYROLL CHECK CASHING
14 = APPLICATION MEMORY USAGE
17 = REFRESH TAX TABLES
18 = REFRESH CONFIGURATION
23 = SUSPENDED TRANSACTION REPORT
24 = CSM OVERRIDE APPROVAL
25 = SHOPPING CARD CASH BACK (interesting ...)
55 = RELOAD PHONE CARDS (didn't know about this)
60 = PRINT PREVIOUS JOURNAL DATA
61 = REPRINT PREVIOUS RECEIPT
69 = Cashier Online Training
70 = UTILITY PAYMENTS (odd that prepaid cards are considered as utilities)
74 = VENDOR PAYMENT
76 = ENTER COIN VOUCHER (probably for CoinStar con-machines)
91 = TC # LOOKUP AND DECRYPTION
121 = PAY WITH CASH
127 = TLE BLITZ ITEMS
137 = P2P PED INFO DETAILS
330 = eReceipt Lookup for Returns
803 = PRINT MBL PAY QR CODE
804 = TOGGLE MBL PAY PINPAD QR CODE
805 = TRIGGER MBL PAY ACTIONS
850 = Transfer Transaction
851 = Retrieve Transaction

ENTER THE DESIRED ACTION CODE
AND PRESS THE 'ACTION CODE' KEY

Now you, too, can be a Walmart Cashier!

The abbreviations in codes 91 and above I'm unfamiliar with. Also this is the complete list, complete with obvious skipping of many numbers.

Has anyone used codes other than 70 before?