FABH0423E REPLACE PROCOPT NOT SUPPORTED FOR PHYSICAL PAIRED SEGMENT=segname
HSSR Engine does not support the replace processing option for segment types (named segname) that are physically paired logical children.
HSSR Engine issues a SNAP for this PCB and falls back to DL/I. The PCB is defined as a DL/I PCB, and all calls issued against it are processed by DL/I action modules.
Modify the PSB. Either specify PROCOPT=G on the SENSEG of the named segment type or do not define the PCB as an HSSR PCB.