A START, MOUNT, or LOGON command requested the creation or initialization of a new address space. The system detected an error while processing the command. A hexadecimal reason code in register 15 explains the error:

Code

Explanation

04

The command code in the command scheduling control block (CSCB) for the START, MOUNT, or LOGON command was incorrect.

08

The system tried to build a task I/O table (TIOT) for the START, MOUNT, or LOGON processing, but failed.

0C

While processing the START, MOUNT, or LOGON command, the system could not open or write to an internal reader.

10

Processing to initialize the address space returned an undefined return code; the defined codes are 0 and 4.

14

The newly created address space cannot be made nonswappable.

18

To create the requested address space, the system issued a REQSWAP SYSEVENT macro. The macro failed.

1C

The newly created address space did not initialize completely.

20

Dynamic allocation or unallocation failed for an internal reader.