The national investor shall be given priority in retail commerce business.
"Section 4. Interpretations
In this Act, unless the context otherwise requires the following words and expressions shall have the meanings assigned to them- [...]
“domestic business organization” means a business organization that is owned by the national; [...]
“foreign direct investment” means an investment where the investor is not a national as defined in this Act and has majority shares, financing, managerial, administrative and technical personnel in an enterprise; 
“foreign investor” means any natural or juridical person who is a resident or a citizen of a foreign county, any legal entity that was founded and registered under the law of a foreign country or was founded under the law applicable in Southern Sudan with a legal address or principal place of business in a foreign country; [...]
“national” mean any citizen of Southern Sudan or any company, partnership, association or body, whether corporate or non corporate in which the majority capital or financial interest is owned by citizens of Southern Sudan and includes a statutory corporation; 
“national treatment” means, with respect to all the laws, regulations and administrative instructions, that foreign investments in Southern Sudan shall be treated on same favorable conditions similar to those of domestic investments; 
“strategic list” means the list of enterprises that are partially or wholly excluded from foreign investment as published by the Board of Directors of the Investment Authority from time to time with the approval of the Council of Ministers and Sothern Sudan Legislative Assembly; 
[...]
CHAPTER IX:. Investment guarantees
Article 33. Prohibition of Discrimination
1) Subject to such strategic list as may be published by the Board with the approval of the Council of Ministers from time to time, foreign investors may own, or control business organizations in any sector of the economy of Southern Sudan as domestic business organizations.
2) The Board may, in consultation with the appropriate Ministers, classify or declassify an activity as an activity reserved for nationals.
3) Amendment to the list of activities reserved for nationals made in accordance with the provision of this section shall be promulgated by way of a legislative instrument within ten (10) days of their adoption, and shall be published in the Government Gazette.
4) Without prejudice to the provisions of subsection (2) and (3) above, foreign investors, employees and workers, shall enjoy the same rights and be subject to the same duties and obligations applicable to nationals.
5) No official, agency, law or other legal authority shall discriminate against investors from a particular country or give special treatment to prospective foreign investors based upon their country of origin or nationality.
6) Foreign investors shall be subject to the same laws that apply to domestic business organizations, in particular —
a. any licenses or other permits for conducting specific business activities that are required of domestic business organizations shall be similarly required of foreign investments;
b. foreign investments shall maintain business books and records in accordance with the same accounting standards that apply to similar domestic business organizations;
c. foreign investments are subject to the same insurance requirements that apply to similar domestic business organizations; and
d. foreign investments shall be taxed in the same manner as similar domestic business organizations.
7) Without prejudice to the provisions of this section, section 42 and the Third Schedule herein, the Board shall facilitate, promote, encourage and protect the indigenous business and investments.
[...]
THIRD SCHEDULE: Priority businesses
For the benefit of Southern Sudanese businesses - especially small business enterprise growth and guaranteeing business opportunities and employment to the Southern Sudanese citizens, the national investor shall be given priority in the businesses listed below:
1. Micro-enterprises.
2. Postal services.
3. Cars hire and taxi operations.
4. Public relations businesses.
5. Retail commerce.
6. Security services.
7. Cooperative services.[...]" (Investment Promotion Act, 2009, Article 33 and Third Schedule)
Investment Promotion Act, 2009
[<a href="https://mojca.gov.ss/wp-content/uploads/2023/03/Investment-Promotion-Act-2009.pdf ">Act</a>]