Parent in Law, doesn't have ITIN and IRS TPA Center advised to file the paper return along with the W7 for dependent at the center. What docs need to be included during filing ? I have never done paper return myself .
Here are some additional steps for including a W-7 with your tax return:
IRS streamlined the number of documents the agency accepts as proof of identity and foreign status to obtain an ITIN. There are 13 acceptable documents. Each document must be current and contain an expiration date. IRS will accept documents issued within 12 months of the application if no expiration date is normally available. Documents must also show your name and photograph, and support your claim of foreign status. Below is the list of the only acceptable documents:
Here is a link to the IRS on ITIN - Frequently Asked Questions