Newly appointed CSA Director of Cricket Graeme Smith has confirmed Quinton de Kock would not be promoted to the Test captaincy.
The decision to overlook de Kock for the job has been made to ensure the wicketkeeper-batsman is not overburdened.
De Kock, 27, is already South Africa's white-ball captain after he took over from previous skipper Faf du Plessis, who stepped down in February this year.
Despite relinquishing the leadership duties, du Plessis has continued to make himself available for all forms of the game.
However, the debate over the Test captaincy has only intensified with the absence of strong candidates for the role given Smith's revelation regarding de Kock.
"It's not going to be Quinton," Smith said in his first tele-conference following his appointment as the full-time director of cricket.
"Quinton will be our white-ball captain but from a workload and mental capacity aspect, we want to keep him fresh. From personal experience, I know that captaining all three formats is challenging and we don't want to overburden him."
In the current South African Test unit, only opening batsman Dean Elgar has the experience of leading the national side before in the conventional five-day format.
Nevertheless, Smith dropped no hints over the likely replacement of du Plessis and said he could not pick out a distinguished player from the side.
"There's no one person you can pinpoint. There are a lot of players on a similar level."
The Proteas team's next Test assignment is in the West Indies in July, though the series has not been finalised yet owing to the coronavirus outbreak.
The COVID-19 crisis has wreaked havoc on the sporting calendar across the globe with South Africa's limited-overs tour of Sri Lanka in June also under the threat of cancellation.
"We are in discussion with the boards of those countries and decisions will have to be made pretty soon," Smith claimed.
Additionally, clouds of uncertainty also hover over the T20 World Cup in Australia in October and November, though the ICC is firmly in favour of holding the tournament as planned.
As part of the preparations for the competition, Smith said South Africa hoped to host India for a T20I series before heading to Australia.
"There is a lot of doubt about what the situation will be by then but we are in discussions with the Board of Control for Cricket in India."
Last month, an ODI series with the same opponents was postponed following a no-result affair in Dharamshala on March 12.