Dinesh Chandimal lost his appeal over a ball-tampering charge and will miss his team's third and final Test against the West Indies which starts Saturday.
The Sri Lankan team management has accepted that they breached the ICC's playing code.
The 28-year-old Sri Lankan is set to miss the final Test against Windies in Bridgetown, which starts on Saturday.
Dinesh Chandimal has been suspended for one Test and fined 100 percent of his match fee after being found guilty of changing the condition of the ball
Kraigg Brathwaite's defiance and more inclement weather ensured a draw on the final day of the second Test between the West Indies and Sri Lanka at the Darren Sammy Stadium in St Lucia on Monday.
Sri Lanka captain Dinesh Chandimal denied tampering with the ball by using a sweet in his pocket before his team raced into a substantial 287-run lead on the fourth day of the second Test against the West Indies on Sunday.
Match officials charged Dinesh Chandimal with changing the condition of the ball after video footage appeared to show him applying artificial substance to the ball.
Sri Lanka captain Dinesh Chandimal was charged for breaching Level 2.2.9 of the ICC Code of Conduct, which relates to changing the condition of the ball.
Sri Lanka agreed to keep playing the second Test against West Indies on Saturday "under protest" after getting caught up in a ball-tampering row.
Umpires Aleem Dar and Ian Gould instructed that the ball be changed before the start of the third day's play between the West Indies and Sri Lanka.
Less than 43 overs were possible on a day of frequent interruptions but Devon Smith took advantage of the opportunity to compile his first Test half-century since the opening match of the home series against England in Antigua in 2015.
Sri Lanka Legends Mahela Jayawardena, Muttiah Muralitharan Deny Services To Struggling National Team
Jayawardena, Muralitharan said they had no trust in the system.
Chandimal's innings spanned five hours and occupied 186 deliveries with ten fours and one six.
Dale Steyn was on Monday named in a 15-man South African squad for two Test matches in Sri Lanka next month.
Set a daunting target of 453, the Sri Lankans crashed from 189 for three in mid-morning to be dismissed for 226 just after lunch, suffering their first Test match defeat at the hands of the Caribbean side for ten years.
Sri Lanka reached 176 for three by stumps on Day 4 with Kusal Mendis unbeaten on 94.
Kieran Powell compiled an entertaining, unbeaten 64 as the West Indies reached stumps at 131 for four to take a 360-run lead vs Sri Lanka.
Shane Dowrich's second Test century put the West Indies in control of the first Test against Sri Lanka as the home side declared their first innings at 414 for eight.