adop phase=prepare failed with ERROR: Script failed, exit code 255 while creating WLS domain

Issue: 
We are trying to run adop prepare phase on our EBS 12.2 Patch file system and it came out with below errors in FSCloneApplyAppsTier_08200431.log file.

START: Creating new WLS domain.
Running /u01/app/EBSDB/fs2/FMW_Home/oracle_common/bin/pasteConfig.sh -javaHome /u01/app/EBSDB/fs2/EBSapps/comn/util/jdk64 -al /u01/app/EBSDB/fs1/EBSapps/comn/adopclone_ebsdb01/FMW/WLS/EBSdomain.jar -tdl /u01/app/EBSDB/fs2/FMW_Home/user_projects/domains/EBS_domain_EBSDB -tmw /u01/app/EBSDB/fs2/FMW_Home -mpl /u01/app/EBSDB/fs1/EBSapps/comn/adopclone_ebsdb01/FMW/WLS/plan/moveplan.xml -ldl /u01/app/EBSDB/fs1/inst/apps/EBSDB_ebsdb01/admin/log/clone/wlsT2PApply -silent true -debug true -domainAdminPassword /u01/app/EBSDB/fs1/EBSapps/comn/adopclone_ebsdb01/FMW/tempinfo.txtScript Executed in 1602 milliseconds, returning status 255
ERROR: Script failed, exit code 255


The above information didn't give sufficient information and had to review CLONE2015-08-20_04-31-47AM.log &  CLONE2015-08-20_04-31-47AM.error logfiles under $ADOP_LOG_HOME/22/<prepare..>/<CONTEXT_NAME>/ directory.  These have provided below additional information which helped in resolving the issue.

CLONE2015-08-20_04-31-47AM.error:

SEVERE : Aug 20, 2015 4:31:49 AM - ERROR - CLONE-20372   Server port validation failed.
SEVERE : Aug 20, 2015 4:31:49 AM - CAUSE - CLONE-20372   Ports of following servers - AdminServer(7004) - are not available.  <-- This port is of Run filesystem instead it should look for 7005
SEVERE : Aug 20, 2015 4:31:49 AM - ACTION - CLONE-20372   Provide valid free ports.
oracle.as.t2p.exceptions.FMWT2PPasteConfigException: PasteConfig failed. Make sure that the move plan and the values specified in moveplan are correct.

CLONE2015-08-20_04-31-47AM.log:FINE : Aug 20, 2015 4:31:49 AM - [J2EEGenericValidationUtil:validateAndGetServerPort] Listen Port(7805) of server forms-c4ws_server1 is valid and free.FINE : Aug 20, 2015 4:31:49 AM - [J2EEGenericValidationUtil:validateServerConfig] Mapping of ports vs servers from moveplan = {AdminServer=[7004], forms-c4ws_server1=[7805], forms_server1=[7405], oacore_server1=[7205], oafm_server1=[7605]} FINE : Aug 20, 2015 4:31:49 AM - [J2EEGenericValidationUtil:validateServerConfig] Mapping of temporary ports assigned vs servers = {}
FINE : Aug 20, 2015 4:31:49 AM - [J2EEGenericValidationUtil:validateServerConfig] map_serverName_vs_actualPort_vs_TempPort = {}

Above highlighted area confirms that except AdminServer port all the other ports are properly picked up.

Additional info noticed in FSCloneApplyAppsTier_08200431.log
m_LstnAddrPrtsDBMap size = 6
Total no. of configGroup = 6
 configGroup Type name = SERVER_CONFIG
configProperty id = Server1
Count for NodeIterator nextNode = 3

Input for AdminServer Listen Address OR Port is NULL
Moveplan won't be updated for AdminServer Listen Address
Moveplan won't be updated for AdminServer Listen Port+++++++++++++++++++++++++
configProperty id = Server2
Count for NodeIterator nextNode = 3
Input for oacore_server1 Listen Address OR Port is NULL
 Updating oacore_server1 Listen Address to ushtc0app02.jacobs.com
 Updating oacore_server1 Listen Port to 7205

These highlighted details above confirmed that adop is unable to update AdminPort to correct value as part of its preparations.

Fix:
Upon further investigation, Listen Address value for AdminServer on Run Filesystem is removed manually.

1) Login to weblogic console of Run  Filesystem. Perform Lock & Edit. Then Navigate to Domain Structure -> Servers -> Select Adminserver.
2) Under Configuration screen -> Update Listen Address value to application server hostname(FQDN).
3) Bounce all the application services.
4) Run adop phase=prepare.

Workaround:
If you want the Listen address value to be Null. Run fs_clone for the EBS Apps. Then proceed with adop prepare phase.