* Plesk 10.x for Linux
* Plesk 10.x for Windows

Resolution ::

For removing Customer and Business Manager (CBM, former Plesk Billing) from Parallels Plesk Panel go to Business Setup -> All Settings in Parallels Plesk Panel (you will be redirected to Server Settings of Customer and Business Manager) or directly to System -> System Configuration -> Server Settings -> Server Groups in Customer and Business Manager, then click to ID of necessary Server Group Name and click Remove for that Parallels Plesk Panel where you need to remove Customer and Business Manager (Local Parallels Plesk Panel server, for example).

After that SSO should be disabled with following command:

Plesk Panel for Unix:

# /usr/local/psa/bin/sso --disable

Plesk Panel for Windows:

C:\>%plesk_dir%/bin/sso --disable

Note: %plesk_dir% is environment variable which points to Plesk installation folder. By default it is C:\Program Files\Parallels\Plesk

Additional information

Also you can use following method for complete removing Customer and Business Manager from Parallels Plesk Panel for Unix:

1. Remove corresponding package with

# rpm -e sw-sso plesk-billing

2. Login to psa database as it is described in article How can I access MySQL databases in Plesk? and remove record with following SQL query:

delete from cl_param where param='ppb-url';

Note: Create backup of Plesk database before performing described changing with following command:

mysqldump -uadmin -p`cat /etc/psa/.psa.shadow` psa > /root/psa.dump.sql

Reference ::