OTM 6.3 Web server installation issue

Hi,

Our environment details given below.

Oracle Weblogic server - 10.3.6
Oracle Database - 11.2.0
Oracle Web Tier - 11.1.1.7.0
Oracle Transportation Management - 6.3.1

First, we installed and configure database and then installed weblogic server, then installed and configured OHS, then installed apps server of OTM, Finally tried to install web server for OTM, it through following error message........

one or more of the following files are missing from your OHS install or they are not writable:
/u01/Bea/Middleware/Oracle_WT1/instances/instance1/bin/opmnctl
/u01/Bea/Middleware/Oracle_WT1/instances/instance1/config/OHS/otm631/httpd.conf
/u01/Bea/Middleware/Oracle_WT1/instances/instance1/config/OHS/otm631/ssl.conf
/u01/Bea/Middleware/Oracle_WT1/instances/instance1/config/OHS/otm631/moduleconf
/u01/Bea/Middleware/Oracle_WT1/wlserver_10.3/server/lib/webservice.jar

What is wrong in my installation? I am having doubt in BEA home directory, OHS weblogic home directory.......Can you tell what i had missed in this?

Thanks in Advance
Guna