End-of-volume returns a code in register 15 that indicates if the request was successful. Table 1 describes these return codes.
| Return Code | Meaning |
|---|---|
| 0(X'0') | Successful. |
| 4(X'4') | The requested volume could not be mounted. |
| 8(X'8') | The requested amount of space could not be allocated. |
| 12(X'C') | I/O operations were in progress when end-of-volume was requested. |
| 16(X'10') | The catalog could not be updated. |