Hitachi TrueCopy for IBM z/OS User and Reference Guide (T5211-96001, June 2007)

Performing TrueCopy for z/OS Pair Operations 6-15
Hitachi Universal Storage Platform V TrueCopy for IBM z/OS User’s Guide
8. On the Pair Operation window, verify that the change pair option
operation(s) completed successfully.
Note: If an error occurs after you click Apply, you can display the error
message by right-clicking on the operation and clicking the Error Detail
command.