Below is the list of the documents that requires to be carried - 

AP ICET Hall Ticket 2019

AP ICET Rank Card 2019

Degree Marks Memos / Consolidated marks memo

Degree Provisional Certificate

Intermediate Marks Memo / Diploma Marks memo

S.S.C or its equivalent Marks memo

IX to Degree Study Certificates or Residence Certificate (in case where candidate has no institutionalised education) or Residence certificate of either of the parent in AP for 10 years excluding the period of employment outside Andhra Pradesh from the competent authority in respect of Non-Local Candidates

Income Certificate issued after 01.01.2015 or Ration Cardholders containing the name of the candidate

Caste Certificate issued by competent authority in respect of SC/ST/BC

Aadhar Card (Photocopies will be returned after verification)

Local status certificate if applicable i.e a candidate who migrates to any part of the state of Andhra Pradesh from the state of Telangana within a period of five years from the 2nd day of June, 2014 shall be regarded as the localcandidate in the state of Andhra Pradesh

So,the original documents are must alongwith the xerox.But for 9th to intermediate certificate you can manage with xerox only if and only if the officer at counselling centres allow you.

Hope this helps.