An ITIN notice is official notification from the IRS responding to a Form W-7. Because there can be multiple applications submitted with one federal tax return, each applicant will receive a notice.

The IRS will send a notice when your:

• Form W-7 application is approved and an ITIN is assigned, or renewed
• Form W-7 assignment notice is corrected for erroneous name, address, date of birth, or
  other valid reason,
• Form W-7 application is suspended,
• Form W-7 application Is rejected, and when
• Original documents are returned to you with Letter 5872

A CP number in the upper right corner or letter number in the lower right of the first page identifies the type of notice, as follows:

• CP-565A – We Assigned You an IRS Individual Taxpayer Identification Number (ITIN)
• CP-565B – Important Information about Your IRS Individual Taxpayer Identification Number (ITIN).
• CP-566 -We Received Your Form W-7, Application For An IRS Individual Taxpayer Identification Number (ITIN).
• CP-567 – We Rejected Your Form W-7, Application For An IRS lndividual Taxpayer Identification Number (ITIN)
• Letter 5872 – Return of Original Documents for ITIN Applications

CP-565A: This notice informs you that we approved your Form W-7 application and assigned or renewed an ITIN. Review it for correct name, address, and date of birth. If it contains an error(s), send the IRS a letter with proof of the correct information to the address on the upper left corner of the notice. Keep a copy for your records.

CP-5658: This notice confirms your ITIN assignment because you did not receive the original notice, or you requested correction of your name, address, date of birth, or other reason(s). Keep a copy for your records.

CP-566: This notice informs you that the IRS suspended your Form W-7 application for missing or insufficient supporting identification documentation, or incorrect information on the application. 
You have 45 days from the notice date to respond with the correct information to allow your application to be processed. Failure to respond timely or send acceptable information will result in a reject notice being issued to you.

CP-567: This notice informs you that the IRS rejected your Form W-7 because you did not meet eligibility requirements, you failed to respond to suspense notice CP-566 within the 45 days allowed, or you responded with information that could not be processed. If you still need an ITIN, you must reapply with a new Form W-7 and supporting identification or supplemental documentation, as
required.

Respond by writing to the address or calling the toll-free number which are both located at the top of the notice. Provide your reason(s) for reconsideration of a suspense notice and enclose any missing supporting documentation or complete the notice section requesting additional information and return within 45 days.

Since a reject notice requires you to reapply with a new Form W-7, if you still need an ITIN, we encourage you to review and follow the Form W-7 instructions to ensure approval of your application.