Datalogic QuickScan I QD21 1 Series Product Reference Manual page 274

Erase Batch Memory
When the scanner is configured in Manual Batch Mode, use the following bar
code to erase any labels stored in batch memory.
NOTE
264
Do not scan an ENTER/EXIT PROGRAMMING MODE label in conjunction with
this barcode.
Enter/Exit Programming Mode
Erase Batch Memory
QuickScan™ I QD21X1 / QM21X1 / QBT21X1