Label 11

: Your notice was originally mailed on the date of this notice, however, it was returned undeliverable.

Label 11 is used when:

An even balance or information notice is returned undeliverable from the U.S. Postal Service and the recomputed balance due changes or

In conjunction with Label 10 on certain balance due notices. See IRM 3.14.2.7.10.6.10, Label 10, for more information. or

In conjunction with Label 12 with TC 846 on the notice module. See IRM 3.14.2.7.10.6.12, Label 12, for more information.