The International Cricket Council (ICC) has rejected Pakistan's request to extend the deadline for naming their 15-member squad for the World Cup.
A number of injuries notwithstanding, the game's world governing body has asked the Pakistan Cricket Board to submit the team list on the scheduled last date of February 13, one month before the start of the quadrennial event in the Caribbean.
Pakistan take on the West Indies in the opener at Jamaica on March 13.
Pakistan is facing numerous fitness problems with its players including star bowlers Umar Gul, Shoaib Akhtar, Mohammad Sami and Shabbir Ahmed all of whom were injured on the current tour of South Africa.
The PCB had asked for a two-week's delay as it wants to first confirm the fitness of these players.
"The ICC has not accepted our initial request but we have again sent another application to the General Manager Cricket Operations and have asked him to reconsider our case because of the special circumstances we are facing," a PCB official said.