IRS
Controlling DLN
This document locator number (DLN) controls the location of a return in the files. It can be an original return DLN or a new DLN assigned to certain examination or collection adjustment documents (also known as Refile DLN).
Controlling DLN
This document locator number (DLN) controls the location of a return in the files. It can be an original return DLN or a new DLN assigned to certain examination or collection adjustment documents (also known as Refile DLN).