TCS Via Campus Recruitment - validation of offer letter showed withdrawn

Hello Sir/Mam, One Of My Friends Recently Got Placed In TCS Via Campus Recruitment...She Got The Offer Letter And She Accepted The Offer Letter Within 7 days As Mentioned. But After 15-20 Days She Was Asked By One Of Her Batchmates To Validate The Offer Letter Immediately...So She Did That..
After Sometime She Realised That "To Validate The Offer Letter" Option Was Under The Heading Of Withdraw Of An Offer...
Does It Mean That She Has Withdrawn From The Offer And Now She Won't Get The Joining? I Am Not From This Field And I Really Don't Have Any Knowledge Regarding It. She Really Doesn't Want To Quit That Offer...
Kindly Help Me...Its Really Urgent... Plz
Regards
Mayank

Hi Mayank,
How did she acknowledge the offer letter? Was that sent over an email or an hard copy of the offer was given to her? Need clarity on this.