After an attempt to use the failover procedure the original background server hung and never started again, causing the inability to use it back again.
The following error is captured in the log files during the start of the server:
pdm_ver 6096 ERROR ServerStatusMonitor. 1783 Can't find RF server XXXXXXX
pdm_ver 6096 EXIT ServerStatusMonitor. 587 Slump host XXXXXXXXXX is not defined as an RF server or is not configured and active
proctor_BOGSCASDE 4252 ERROR pdm_process.c 917 Process stopped unexpected exit code from: ../CATECH~1/SERVIC~1/bin/pdm_ver -s -r Expected: 0 Received: 999