USPS Homepage Skip Navigation Home
National & Premier Accounts > Verify & Transport > MERLIN > MERLIN Reports > Barcodes
National & Premier Accounts
Manage Account
Plan & Design
Address Management
  Verify & Transport
    MERLIN
      MERLIN Reports
     
Track
News & Information
Locate & Calculate
Customer Support

Barcodes  
Understand barcode quality.
The MERLIN® program compares recognized printing characteristics to conduct barcode quality analysis. These characteristics include height, width, pitch, spacing, bars per inch, rotation, skew, placement, and clearance. They are evaluated to ensure compliance with USPS® requirements and standards.

• If the sample receives a score of 90 percent or higher, the mailing qualifies for automation rates
• Mailings with results of 89 percent or less do not qualify for automation rates


Seven reports are related to barcodes:
 
Automation Rate Barcode Readability Report
describes summary information about the barcodes in the mailing sample, and provides specific mailpiece barcode discrepancies.
Automation Rate Barcode Readability Report (RTF)

Automation Rate Barcode Components Report
displays up to four barcode images of the mailpieces for each error type listed in the report legend.
Automation Rate Barcode Components Report (RTF)

Barcode Error Listing Report
lists mailpieces with barcode errors, barcode quality errors, and warnings.
Barcode Error Listing Report (RTF)

Automation Rate Barcode Adjustment Worksheet
provides information about the acceptability of barcode entries in a mailing. It also calculates the postage adjustment required based on problems with barcode readability.
Automation Rate Barcode Adjustment Worksheet (RTF)

Barcode Exceptions Report
divides all barcode errors into four categories:
• Barcode Location Failure
• Barcode Quality Failure
• Recognized but not Analyzed Barcode
• Unrecognized Barcode

The overwrite capabilities of this report only apply to the categories of: Barcode Location Failure, Recognized but not Analyzed Barcode, and Unrecognized Barcode. Individual mail items cannot be overwritten; however, no items listed under Barcode Quality Failure can be overwritten.
Barcode Exceptions Report (RTF)

Barcode Digit String Report
The report will list the mailpiece numbers of those with "0000" as a four-digit add-on code and those with "9999" as an add-on code that are not General Delivery addresses.
Barcode Digit String Report (RTF)

Automation Rate Barcode Readability Report
describes summary information about the barcodes in a mailing run, and specific mailpiece barcode discrepancies.
Automation Rate Barcode Readability Report (RTF)

  Related Services & Links
Domestic Mail Manual