Africa Cup of Nations draw in Cameroon delayed by Covid-19
A CAF official said the delay of the ceremony to an undecided date was due to "logistical reasons related to Covid-19".
The seeded draw will create six groups of four teams with the winners and runners-up in each plus the four best third-place sides advancing to the knockout second round.
Among the 23 countries who have qualified are defending champions Algeria, hosts Cameroon and record seven-time title-holders Egypt.
Burkina Faso, Cape Verde, Comoros, Equatorial Guinea, Ethiopia, Gabon, Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Malawi, Mali, Mauritania, Morocco, Nigeria, Senegal, Sudan, Tunisia and Zimbabwe have also secured places.
The last place will be filled by Sierra Leone or Benin, who meet between June 12-14 after a dispute over coronavirus tests prevented the qualifier taking place last March.
Benin refused to play in Freetown because five of their stars were barred having tested positive for Covid-19 in tests conducted by Sierra Leone medical officials.
All five tested negative for the illness before travelling to Freetown and when they returned to their clubs in Europe.
The Cup of Nations was originally set for January and February this year only to be postponed because of the pandemic.