postalref

Multi-line Accuracy Support System

The Multi-line Accuracy Support System, MASS, is a USPS certification for the machines that read addresses on mail and apply its barcodes. It is an extension of CASS, the certification that improves the accuracy of postal codes on mail. A mailer needs it to barcode mail with these machines at automation rates.

Updated October 31, 202623 sources

What it is

An MLOCR, a multiline optical character reader, is equipment that applies a barcode to mail and presorts it. MASS certifies MLOCRs, Remote Video Encoding and Local Video Encoding systems, and encoding stations. It tests whether each one processes address information and applies an accurate Intelligent Mail barcode, or IMb. Certification qualifies a mailer to print barcodes for ZIP+4/DPV confirmed addresses on mail at automation rates.

Hardware manufacturers certify each machine type before mailers can test the machines they own. A mailer using an MLOCR also needs CASS certified software for the machine's address matching. The Addressing and Geospatial Technology office, AGT, issues MASS certification once a machine reaches the required accuracy.

MASS certification is annual, valid from the certification date to the end of the annual period, August 1 through July 31. Customers must reapply and meet the accuracy requirements each year to stay certified. Cycle O testing is required only of MASS manufacturers. They test every model and configuration of the machines they will support.

How it works

Every MASS test works like a CASS Stage II test: USPS grades the address-matching software and barcode hardware after they process a test file. The test file is a deck of test mailpieces, 2,000 for an MLOCR and 350 for an encoding station.

The certification cycle has these phases:

  1. Software manufacturer certification.
  2. Hardware manufacturer certification.
  3. RVE/LVE manufacturer certification.
  4. User certification.

A mailer certifies each machine in these steps.

  1. Open an Electronic Product Fulfillment account for MASS File Upload, if none is on file.
  2. Order a separate test deck for each machine on the MASS Order Form.
  3. Send the End Users Terms and Conditions document for each location's first certification in the cycle.
  4. Process the deck with the equipment provider's static data on a representative machine.
  5. Spray an X as the first character of the machine identifier.
  6. Cull the pieces the machine cannot spray a LACSLink, SuiteLink or change-of-address answer on.
  7. Return the answer file, the flagged images and PS Form 3553 through EPF.
  8. USPS tries to return the test results within ten business days.
  9. On a pass, the Licensing and Certification Department issues a certification letter.

The test deck

A test deck holds the same kinds of addresses as the CASS Stage files, in about the same mix. Each test mailpiece is a printed insert in a window envelope. The upper window shows USPS data that names the deck, the customer tracking number and the question's key number. The key number is also the answer file's name, such as A00421EH.DAT.

The lower window holds the test address and the NCSC IMb, a barcode with the test key. When a piece's image must come back, that IMb also carries the routing code 99999999999. A piece whose return address is shaded and holds asterisks must also be returned as an image file.

The barcode on each piece

The machine sprays its answer as an IMb with these settings:

  • Barcode ID set to 00.
  • Any valid 3-digit Service Type Identifier.
  • A Mailer ID of 6 or 9 digits, not all zeroes, the same on every piece.
  • A serial number of 6 or 9 digits, not all zeroes, unique to each piece.

A barcode that breaks these requirements fails the MASS test. When a piece has an IMb in the address block and another in the barcode clear zone, the grader reads the clear-zone barcode. For flats, the answer can also sit above the address block, within 4.75 inches of the right edge and 3.25 inches of the top.

The answer file

The answer file holds a record for every mailpiece in the test deck. Each field in the record has fixed positions and a fixed length.

FieldFromThroughLength
NCSC IMb00103131
Filler03203201
Customer Answer03306331
Filler06406401
MASS Identifier06507107
Filler07207201
5-Digit ZIP Code07307705
Filler07807801
MASS Text Answer07912042
Filler12115030

Each field but the fillers holds one part of the answer:

  • NCSC IMb: the test barcode, with its Barcode ID, STID, Mailer ID, serial number and 5-digit ZIP Code.
  • Customer Answer: the machine's IMb for the test address, with all its elements.
  • MASS Identifier: the seven-character machine identifier, starting with X.
  • 5-Digit ZIP Code: the 5-digit ZIP Code sprayed on the piece.
  • MASS Text Answer: the address the IMb was sprayed for, on a LACSLink, SuiteLink or change-of-address piece.

The machine may put its own STID, Mailer ID and serial number in the Customer Answer. A rejected piece, or one without a 5-digit ZIP Code, may leave the Customer Answer and ZIP Code fields blank. Its NCSC IMb should still be returned.

Test files go up through the EPF upload page, https://epfup.usps.gov/up/upload.html. The tester selects the file type MASS File Upload. The grading system picks up a file only when its name is correct. USPS recommends uploading the files in this order:

  1. The answer file, named on the mailpieces, with a .DAT extension.
  2. The images of shaded pieces and of LACSLink and SuiteLink pieces the machine cannot spray, as .TIF files.
  3. PS Form 3553, the CASS Summary Report, as a .PDF file.

One zipped file of images should have its .ZIP extension renamed to .TIF.

Video encoding systems

When an MLOCR captures the images or applies the barcodes, it must be MASS certified before its RVE or LVE system can attempt certification. The RVE and LVE test evaluates the whole remote or local video encoding operation. During that test, the MLOCR's own coding must be turned off.

Existing networked machines can be tested in groups of four. A new encoder must be tested alone for its first certification. When the manufacturer passes, AGT issues a MASS Certification Letter.

Grading

A deck passes with a score of 98.5% and every one of these conditions met:

  • No more incorrectly coded Perfect Addresses than the maximum allowed.
  • No code to a Fatal Add-on, which fails the test automatically.
  • No more incorrectly coded delivery point barcodes than the maximum allowed.
  • PS Form 3553 counts within a 1% tolerance.
  • PS Form 3553 signed, dated, complete and accurate.
  • Any DPV false-positive record reported to DSF2STOP@USPS.GOV, in a separate email for each deck.

The decks also include mailpieces that test MPE systems. NCOALink MPE is a method that uses an MLOCR or RVE system to print the change-of-address update on the mailpiece. That portion of the test needs a score of 95% to pass. If the MPE audit fails, the Licensing Department puts that MLOCR in recertification mode. A machine that fails MASS gets a new test deck that includes forwardable pieces.

Courtesy period

A new system needs certification, and so does one that is moved, relocated within its facility, upgraded or reassembled. The Licensing and Certification Department gives these systems a 45-day courtesy period. It is granted when written notification arrives within seven days of the installation date. During the courtesy period, the system may produce mail at automation rates.

The MASS Order Form is the preferred way to notify. The form must give the installation date, which sets the courtesy period.

Recertification

A machine certified within the current cycle needs recertification after any of these changes:

  • A new machine.
  • A camera change, such as SBR to LMT.
  • A model change.
  • A hybrid system's change from one manufacturer to another.
  • A move to a different address.
  • Reassembly.

An equipment provider must certify a new software version or operating system on one of its machine models before releasing it. Customers do not have to test those updates. A manufacturer must send written notification before it distributes a revision, upgrade or patch to its software or hardware.

When a machine changes owners, the new owner must notify the Licensing and Certification Department by email at cassman.ncsc@usps.gov. The notice must name the machine's model, serial number and MASS ID, and both owners. A machine that is upgraded, moved or relocated must be recertified by its new owner.

A manufacturer that upgrades a machine another manufacturer supports must provide a Letter of Agreement from both parties, making a hybrid system. Without that letter, the department assigns no MASS IDs for the system.

Fees

The initial MASS certification test has no charge. A retest costs the fee in the Price List, Notice 123. Certification test fees are payable within 30 days of the billing date. AGT's Accounting Department mails the invoices.

Rules

MASS™ certification is mandatory for mailers using MLOCRs, RVE, LVE, or encoding stations to print delivery point barcodes (DPBCs) on mailpieces submitted for mailing at discounted automation rates.

MASS certification is mandatory for a mailer that prints delivery point barcodes with an MLOCR, a video encoding system or an encoding station on mail at automation rates.

A passing score of 98.5% must be achieved and the following requirements must be met on all test decks to attain MASS certification.

Every test deck must score at least 98.5% and meet each grading condition before the machine is certified.

MASS test decks must be processed with static test data that is provided by the equipment manufacturer along with the cycle software.

The tester must run the deck on the static test data that the equipment manufacturer ships with the cycle software.

All MASS certification tests must be conducted in a “normal operations” state, meaning the systems must be configured as it would be when it is used to produce live mail for automation discounts with MPE or Cloud in the active mode.

The machine must be tested set up the way it runs live mail for automation discounts, with MPE or Cloud active.

The CASS software that will be used on each representative machine must be CASS certified before a MASS test deck can be ordered.

The address-matching software on each machine must hold CASS certification before anyone orders a MASS test deck for it.

Certification must be achieved by the 45-day courtesy expiration date or adjusted courtesy date to avoid the system from becoming ineligible to submit mail at automation rates.

A new or changed system must pass by the end of its courtesy period, or it can no longer enter mail at automation rates.

Each required certification period, customers must apply for MASS certification and meet the accuracy requirement to remain certified and avoid interrupted service to their customers.

Customers must apply and meet the accuracy requirement again in every certification period to stay certified.

What goes wrong

A failed test brings a report with the test score and errors, and USPS ships a new test deck. The Customer No Match Report marks each missed record with an error code, such as 15 for a fatal error. A test run without static test data fails.

A LACSLink or change-of-address piece without its new address sprayed is graded as incorrect, unless it is culled and returned as a .TIF image. The review cannot finish until every mailpiece image and culled piece arrives, which may delay results. A file with an incorrect name is not picked up from EPF.

If a newly installed system has a problem, the customer must notify the department in writing so it can adjust the courtesy period. A system that becomes ineligible for automation rates gets an email to the customer to check the machine's status. A customer that fails to notify the department is reported to the Business Mail Entry manager as not certified.

Terms

Multi-line Accuracy Support SystemMASS, MULTILINE CODING ACCURACY SUPPORT SYSTEM, Multi-line Accuracy Support System (MASS) certification
The MASS™ certification is a process similar to CASS but is designed for certification for Multiline Optical Character Readers (MLOCRs), Remote Video Encoding (RVE), and encoding stations to process address information and apply an accurate delivery point barcode (DPBC).
Coding Accuracy Support SystemCASS, CASS software program, CASS certification process, Coding Accuracy Support System (CASS) certification
provides hardware and software manufacturing, service bureaus, and commercial mailers a common measure by which to test the quality of address-matching software.
Stage II
the certification test that is required to achieve CASS certification.
Multi-Line Optical Character ReaderMLOCR
Equipment used by mail service providers that applies a barcode and presorts mail, enabling the mail owner to take advantage of automation discounts.
Delivery Point BarcodeDPBC
A general term for a POSTNET barcode that contains the nine digits of the ZIP+4 code plus two digits, which are generally the last two digits of the primary street address number (or Post Office Box, etc.).
Intelligent Mail BarcodeIMb, 4CB, Intelligent Mail barcode (piece level barcode), 4CB, 4-CB, USPS4CB, USPS 4-State Customer Barcode, 4-state customer barcode
The IMb is a height-modulated barcode that encodes up to 31 digits of mailpiece data into 65 vertical bars using a 4-state symbology.
MASS test deck
MASS™ test decks are designed to exercise MLOCR and encoding station address-matching software look-up capabilities emulating the CASS™ Stage files.
MASS IdentifierMASS ID
Seven-character machine identifier. The first character should be an “X” to indicate static test data was used to process the test deck.
National Change-of-Address Link Mail Processing EquipmentNCOALink MPE, NCOALink MPE service, NCOALink MPE processing, NCOALink MPE solution, NCOALink Mail Processing Equipment
a pre-mailing method that uses a Multiline Optical Character Reader (MLOCR) system or a Remote Video Encoding (RVE) system to print the COA update directly on the mailpiece
Electronic Product FulfillmentEPF, Electronic Product Fulfillment (EPF) web site, Electronic Fulfillment Website
A secure web-based application managed by the National Customer Support Center in Memphis TN that is used to post and receive Address Management and Address Information System products, including ACS fulfillment files.
Delivery Point ValidationDPV, Delivery Point Validated, delivery point valid
The DPV® Product identifies whether a ZIP + 4® coded address is currently represented in the USPS® delivery file as a known address record.

Documents

Contact Lists

Contacts

The Licensing and Certification Department answers questions at 800-642-2914 or cassman.ncsc@usps.gov. Mailed images and culled pieces go to MASS CERTIFICATION, ADDRESSING & GEOSPATIAL TECHNOLOGY, 225 N HUMPHREYS BLVD STE 501, MEMPHIS TN 38188-1001.

Sources