PR cards will only be mailed to post office (PO) boxes if the PO box is your residential mailing address
http://www.cic.gc.ca/english/information/applications/guides/5445ETOC.asp
check Question 13
If you provide us with a mailing address, all correspondence will be sent to this address. However, PR Cards will not be mailed to third party addresses. If you provide a third party address in Question 13, your PR Card will be sent to your residential address. PR cards will only be mailed to post office (PO) boxes if the PO box is your residential mailing address. If no residential address is provided, processing will be delayed until your residential address is provided.
if you have a 3rd party rep:
"...the PR Card will be mailed to the residential address once it has been provided by the client. As PR Cards are not mailed to P.O. boxes, clients who indicate a P.O. box instead of a mailing address will have to provide justification as to the reason they do not have an acceptable mailing address...."
check this:
http://www.cic.gc.ca/english/resources/manuals/bulletins/2013/ob491.asp
robal said:
There is no address on my ecas..only indian add. There. Can i give po box address for pr card ..