| Contracting Parties/Signatories | Signature | Instrument | In Force | Details |
| Angola | August 17, 1992 | Ratification: August 20, 1993 | September 30, 1993 | |
| Botswana | August 17, 1992 | Ratification: January 7, 1998 | February 6, 1998 | |
| Democratic Republic of the Congo | | Accession: September 8, 1997 | September 8, 1997 | |
| Lesotho | August 17, 1992 | Ratification: August 26, 1993 | September 30, 1993 | |
| Madagascar | | Accession: August 18, 2005 | August 18, 2005 | |
| Malawi | August 17, 1992 | Ratification: August 12, 1993 | September 30, 1993 | |
| Mauritius | | Accession: August 28, 1995 | August 28, 1995 | |
| Mozambique | August 17, 1992 | Ratification: August 30, 1993 | September 30, 1993 | |
| Namibia | August 17, 1992 | Ratification: December 14, 1992 | September 30, 1993 | |
| Seychelles | | Accession: June 24, 1998 | July 24, 1998 | |
| South Africa | | Accession: August 29, 1994 | August 29, 1994 | |
| Swaziland | August 17, 1992 | Ratification: April 16, 1993 | September 30, 1993 | |
| United Republic of Tanzania | August 17, 1992 | Ratification: August 27, 1993 | September 30, 1993 | |
| Zambia | August 17, 1992 | Ratification: April 16, 1992 | September 30, 1993 | |
| Zimbabwe | August 17, 1992 | Ratification: November 17, 1992 | September 30, 1993 | |