Undeliverable External Collections notices the United States Postal Services (USPS)
cannot deliver are handled differently than other returned SSA items.
Most of these undeliverable notices are handled by the mail room in PC7 ODO by scanning
the barcodes on the notices using the TRUN screen (see MS 01114.008). If scanning is not possible or the notices are returned to another location, the
notices are input using the TRRN screen (see MS 01114.009).
An undeliverable pre-offset notice is recorded on the ECO Master (see MS 01114.007) and will stop any referrals to Treasury, credit bureau reporting, and Administrative
Wage Garnishment.
If referral has already been made, an update is sent to Treasury to remove the debt
from TOP. ECO will request an address from the Address Verification Contractor (see
SI 02220.012A.4 in this section).