When the system returns control to the problem program, the low-order byte of register 15 contains one of the following return codes. The 3 high-order bytes of register 15 are set to 0.
The RELEX return codes are:
| Return Code (15) | Meaning |
|---|---|
| 00 (X'00') | Operation completed successfully. |
| 04 (X'04') | The specified data block was not in the exclusive control list. |
| 08 (X'08') | The relative track address, relative block address, or actual device address was not in the data set. |