The CP 54 series of notices is issued to alert the taxpayer that:
This notice is now only applicable to paper-filed returns, as the IRS has Name and Identification number verification in place for electronically-filed returns.
Sections of the Notice:
Sample CP 54B: PDF Pages 1-4
Sample CP 54E: PDF Pages 1-4
Sample CP 54G: PDF Pages 1-4
Sample CP 54Q: PDF Pages 1-3
Note that any link in the information above is updated each year automatically and will take you to the most recent version of the document at the time it is accessed.