What this notice is about We reviewed your Form W-7A, Application for Taxpayer Identification Number for Pending U.S. Adoptions, and we need additional information in order to process it. What you need to do Complete the CP563 response card and provide the requested information as described in your notice. You may want to Call the IRS at 737-800-5511 or 267-941-1000 (for international calls), if you have additional questions. Reference Tools Publication 5027, Identity Theft Information for Taxpayers Full list of tax forms and instructions Need Help? You can authorize someone to contact the IRS on your behalf. See if you qualify for help from a Low Income Taxpayer Clinic. If you can’t find what you need online, call the IRS number at the top of your notice or letter.