Documents to be attached along with ipce exam form

printout of form, generated after the payment of examination fees

+ itt certificate photocopy

+ orientation certificate photocopy

But is the photocopy of ipcc registration also necessary?

no, no need to attach photocopy of registration letter.

@ Vishnu:

It is clearly mentioned in the icai online exam form site w.r.t. the documents to be attached. Pasted below for your reference.

10.   Check-List for candidates

Candidates are requested to ensure that all columns of the PDF file generated are appearing correctly. The barcode and fee payment particulars may be checked for correctness. Attach a  Photocopy of IPCC Registration/Conversion letter.

Source: Refer point 10 https://icaiexam.icai.org/guide_ipce.php