Senong earlier named a 28-man squad to travel to Europe for the first phase of their training camp, as they prepare for the global showpiece running from May 20 - June 11.
However, five players including Grant Margeman (Ajax Cape Town), Teboho Mokena, Fagrie Lakay (both SuperSport United), Reeve Frosler and Phakamani Mahlambi (both Bidvest Wits) are unable to report for duty due to club commitments.
Margeman has been replaced by Zama Rambuwane (Hapoel Ra'anana A.F.C, Israel) while Sydney Mtshweni (SuperSport United) takes the place of Mokoena and Keletso Makgalwa (Mamelodi Sundowns) comes in for Lakay.
Katlego Ntshabeleng (University of Johannesburg) and Sirgio Kammies (Ajax Cape Town) have been called up in place of Mahlambi and Frosler respectively.
Senong, though, remains upbeat amid the "minor crisis" and is confident that the camp will still prove successful despite missing those key players.
“This is a minor crisis and something we have become accustomed to, but there is not much we can do about it," Senong told the SAFA website.
"We have a pool of players that we are monitoring and therefore we are able to make changes going into the camp.
"Unfortunately, we are dealing with a difficult age group as these players break into their first teams around the same time we need them at the national set up.
“But I am happy for players like Reeve Frosler and Grant Margeman because they are getting the much needed game-time at the highest level locally and this will help us going forward.
"I still believe such a training camp would also have helped in their development as players, especially at international level.”
The 28 players (listed below) will report for national team duty on Wednesday, 19 April before departing for the Netherlands on Tuesday, 25 April where they will hold camp.
Sanele Tshabalala (Bidvest Wits), Darren Johnson (Ajax Cape Town), Mondli Mpoto (SuperSport United), Khulekani Kubheka (Mamelodi Sundowns)
Malebogo Modise (Mamelodi Sundowns), Thendo Mukumela (Mamelodi Sundowns), Notha Ngcobo (Mamelodi Sundowns), Tercious Malepe (Orlando Pirates), Shane Saralina (Ajax Cape Town), Sandile Mthetwa (Orlando Pirates), Aghmat Ceres (Ajax Cape Town), Siyabonga Ngezana (Kaizer Chiefs), Sirgio Kammies (Ajax Cape Town)
Sipho Mbule (SuperSport United), Wiseman Meyiwa (Kaizer Chiefs), Nkosingiphile Ngcobo (Kaizer Chiefs), Sibongakonke Mbatha (Bidvest Wits), Kobamelo Kodisang (Platinum Stars), Zama Rambuwane (Hapoel Ra'anana), Kabelo Seriba (FC Metta, Latvia), Masilakhe Pholongo (Ajax Cape Town), Luther Singh (Sporting Braga, Portugal), Sidney Mtshweni (SuperSport United)
Itumeleng Shopang (Kaizer Chiefs), Liam Jordan (Sporting Lisbon, Portugal), Thabo Cele (Benfica, Portugal), Katlego Ntshabeleng (University of Pretoria), Keletso Makgalwa (Mamelodi Sundowns)