Validation failures

One of the following error messages are generated when a validation process fails. P/DAS writes all messages to the system operator log and returns error code 16 to the system.

The following message means that the volumes are not part of a PPRC pair or that the volumes are not in duplexed mode:
```
IGF512I SWAP FROM ssss TERMINATED - NOT A VALID PPRC PAIR
```

The following message means that the volume is an active paging volume:

IOS602I IOACTION - STOP NOT ALLOWED FOR PAGING DEVICES.
           THE FOLLOWING DEVICE(S) ARE IGNORED:  dev dev1-dev2...

The following message means that a system in the sysplex has reserved the volume:

IOS604I IOACTION - STOP NOT ALLOWED FOR RESERVED OR RESERVED PENDING
           DEVICES.
           THE FOLLOWING DEVICE(S) ARE IGNORED:  dev dev1-dev2...

The following message means that the volume is currently allocated:

IOS605I IOACTION - STOP NOT ALLOWED FOR DEVICES IN USE BY THE SYSTEM.
           THE FOLLOWING DEVICE(S) ARE IGNORED:  dev dev1-dev2...