6. DATA SOURCES › 6.2 Record Descriptions › 6.2.1 Channel Check Handler Record (CCH)

6.2.1 Channel Check Handler Record (CCH)

The operating system writes a Channel Check Handler Record
when a channel failure occurs but the system control program
is not terminated.  The errors include channel control
checks, channel data checks, and interface control checks.

The record types are 20 and 21.