Hi Ichida,
The information on the localized country versions available with each release
may be obtained here https://www.sme.sap.com/irj/sme/community/collaboration/wiki.
If it is necessary for you to implement a particular country as a separate
country in your solution, it is possible to engage with a certified SAP
Partner for them to implement an additional country and the associated
objects like a dedicated Set of Books,etc., by employing the
'Localization Tool Kit'. Since some limitations do exist however also
for this, you are strongly advised to discuss your specific requirements in
detail with your partner.
Further details on Localization is available at
the link: https://wiki.sme.sap.com/wiki/pages/viewpage.action?title=Customer+Specific+Localization&spaceKey=OnDemandWiki
Regards,
Suresh