The 8-byte data area is passed to the exit routine, none of them may be modified:
| Offset | Length or bit pattern | Description |
|---|---|---|
| 0 | 6 | The volume serial number of the expired tape volume |
| 6 | 1 | Flag byte one |
| 1... .... | Tape volume is being purged | |
| .1.. .... | Data sets on tape volume are expiration date protected | |
| 7 | 1 | Flag byte two |