29 July 2015
Latest CPC order number means the reference number given in CPC intimation u/s 143(1) when the return was first processed. You can find it on registered mail ID and if it's not there you can request for resending the same. Sometimes intimation is also sent by post at registered address especially if demand is there.
07 August 2015
sir, But actually the problem is that while e-filing the rectification return, it is found that it require latest intimation cpc number. I've taken new intimation letter but eventhough the cpc details are same as before. is there any other possibility to get new intimation number. please do the needful