In IRS terminology, "CP" stands for "Computer Paragraph." The term "link" in your request likely refers to the connection between a taxpayer's identification information and the EFTPS system, or potentially a web link provided within the notice for enrollment. cp 517 link
Providing more context will help me refine this content for you. Total air content measurements from the RECAP ice core - CP In IRS terminology, "CP" stands for "Computer Paragraph


