Dear,

Visit this link  https://sche.ap.gov.in/ICET/ICET/ICET_HomePage.aspx. and click on processing fee payment online. Enter APICET Hall Ticket number and rank and click on pay fee online. The candidate will be directed to payment gateway Select any one mode of payment and enter credentials. Upon successful payment, click on tab ‘print’ and take a print copy to produce it at the time of verification of certificates.

Hope this helps!