Changing the Initial Password for the SAP Web Dispatcher User 
In this step, you change the initial password for the Web Dispatcher administration user webadm for security reasons.
For more information about webadm and other standard users in SAP NetWeaver Enterprise Search, see the security guide, User Management section .
Log on to the master blade with the <sid>adm user.
Switch to the /usr/sap/<SID>/SYS/global/security/data folder.
Execute the following command:
wdispmon pf=/sapmnt/<SID>/profile/<Web_Dispatcher_instance_profile>.
Choose menu in the list of options.
In the menu, choose
Choose the /usr/sap/<SAPSID>/SYS/global/security/data/icmauth.txt file.
Choose the change passwd of existing user in set option.
Change the initial password and save with the save changes to file set option.