Johannesburg - Democratic Republic of Congo's celebrations at qualifying for the 2014 African Nations Championship (CHAN) could be short-lived over the failure to produce identity documents.
Cameroon, who drew 1-1 in Lubumbashi at the weekend but lost the tie 2-1 overall, have protested after the Congolese did not show passports or player licences before the first leg.
The match commissioner was, therefore, unable to confirm that the Congolese footballers were all home based, a condition for playing in the competition.
Should DR Congo be found guilty, the sanctions available to CHAN organisers the Confederation of African Football (CAF) include disqualifying the central Africa country.
Mozambique secured the last place at the January 11-February 1 CHAN in South Africa after forcing a 1-1 draw in Angola to squeeze through on away goals.
Burkina Faso, Burundi, Congo-Brazzaville, Ethiopia, Gabon, Ghana, Libya, Mali, Mauritania, Morocco, Nigeria, South Africa, Uganda and Zimbabwe are the other qualifiers.
DR Congo first-leg match-winner Ndombe Mubele wasted two chances before his team took the lead on 20 minutes at Stade Kamalondo when Patou Ebunga scored after a corner.
But Cameroon set up a tense final 20 minutes in the southern Congolese mining hub when Tobie Ebah punished a defensive blunder.
It was a brave exit by a Cameroonian side missing seven stars from champions Coton Sport, who were on CAF Champions League duty against Recreativo Libolo in Angola.
DR Congo fielded three defenders from leading club TP Mazembe, whose CAF Confederation Cup match against CA Bizertin of Tunisia was played at the same ground 48 hours later.
The Congolese share with Ghana and Zimbabwe the distinction of qualifying for all three CHAN tournaments and after becoming the first title-holders in 2009, reached the quarter-finals two years ago.
Mozambique secured a place among the 16 finalists for the first time after fighting back in Angolan coastal city Benguela having been held 0-0 in Maputo a week before.
Guedes put Angola ahead on 11 minutes at a packed Ombaka Stadium only for Alberto Diogo to end a four-match CHAN goal drought by levelling on the half-hour mark.
The goal made Diogo the leading scorer in the qualifying competition with three after he bagged a brace in the four-goal rout of the Seychelles last December.
Cairo will host the September 18 tournament draw, which will split the 16 countries into four mini-leagues, and fixtures are scheduled for Bloemfontein, Cape Town and Polokwane.