i uploaded adhaar card instead of admit card and also proceeded with payment so i cannot remove image disceprancy now.can i correct it when apllication form correction window opens? will my apllication form be rejected?

Isha, it depends on the exam for which you have filled the form. Most of the examinations allow for a correction of documents uploaded and details like date of birth, name etc. but this also varies from exam to exam as some examinations do not have a correction facility altogether and the information once entered is deemed to be the final one. Now, since you haven't elaborated about the name of tge exam, it is difficult to answer your query. So, kindly rewrite the query with full details of the exam or you can mention it in a comment but in general, there are chances of these type of details being open to correction in correction window. Also, it is advised to contact the Examination Helpdesk as soon as possible to tell them about your situation and ask for further course of action.