Ipcc online form

Thanks for the reply, but I have a doubt that , should i send the envelope for rectification inside the main envelope or seperately? because in the ICAI.org it is written that put in the rectifiaction request in an envelope seperately- to be exact- 

The PDF reflects what is filled up. We request you to be careful while filling and saving the form. You can highlight the area wrongly entered/appearing in the PDF and mark the correction without disturbing any other area. Also SEPARATELY send a signed application quoting the registration number and control number intimating the correction required. Superscribe the envelope with as "Request for Correction Final-May2012" / "Request for Correction PCE-May2012"/ "Request for Correction IPCE-ATE-May2012" ) this is only for such case where centre/group are not wrongly entered hence pl do not take is as general correction procedure.  

So I would really appreciate if can help me with it!!