The 48 probables were trimmed down to 33 before the final 18 are announced for the Lanco series and Champions Trophy.
Rajpal said his removal from the side was for reasons other than hockey.
Rajpal was axed from the 32-man squad for the qualifiers, while Halappa was named as a standby.
Kargil Vijay Diwas: 10 Bollywood Movies Based On The Lives Of Indian Soldiers
In Photos: The Gionee M6 and M6 Plus Smartphones
Get a Glimpse of Olympic Village at Rio
In Pictures: The LG X Screen Smartphone With Dual Display
West Indies vs India, 1st Test, Day 2
CNN name, logo and all associated elements ® and © 2016 Cable News Network LP, LLLP. A Time Warner Company. All rights reserved. CNN and the CNN logo are registered marks of Cable News Network, LP LLLP displayed with permission. Use of the CNN name and/or logo on or as part of NEWS18.com does not derogate from the intellectual property rights of Cable News Network in respect of them.
© Copyright Network18 Media and Investments Ltd 2016. All rights reserved.