Clearing system is integrated into the Clearing SSO at present.
Please follow the procedure of "1-2 Pre-settings" in the "SSO / Portal User Manual" disclosed on the Target-JSCC site.

[How to search]
1. Go to Target-JSCC Site.
URL: https://portal.arrowfront.jp/target/x/jscpss/webportal/top.html
* The URL starts with "http:" if accessing Target via arrownet.
* Target-JSCC site is available only in Japanese.

2. Click "書類をダウンロードする" tab at the top bar.

3. Click "Specifications etc." under the category "Listed Products"or "システム運用マニュアル" under the category "国債店頭取引".

4. Click "SSOPortal User Manual" under the category "Specifications etc.".

However, depending on you DNS settings and network configuration, settings which is different from those described in the said manual may be required.
Please additionally refer to "Appendix3: Network Configuration Pre-Check Procedures for SSO/Portal" in the "System Administrator’s Guide".