TCP/IP abend 4C5 reason codes

The abend 4C5 reason codes are in the format xxxxyyyy where:
xxxx
The first halfword is for internal use only.
yyyy
The second halfword contains a unique TCP/IP reason code for abend 4C5.

Tip: If the SBLSCLI0 library is included in the SYSPROC or SYSEXEC search order for a TSO session, use the ERRNO A xxxxyyyy command to interpret these values.