Publication 91 - Confirmation Services Technical Guide
Publication 91 - Confirmation Services Technical Guide
Publication 91 - Confirmation Services Technical Guide
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Troubleshooting <strong>Guide</strong><br />
TOPICS<br />
BARCODES<br />
I’ve been told by the Postal Service<br />
that my barcodes are not scannable.<br />
What could be causing this?<br />
GUIDELINES<br />
Printer Maintenance. Customers should ensure they routinely maintain<br />
their printers. The barcode and human-readable portion of the label<br />
must meet the Postal Servcie quality specifications (see Section 3<br />
Labels and Barcodes). If the barcodes do not meet the specifications,<br />
the Postal Service delivery employee’s scanner will not capture the<br />
Package Identification Code (PIC) from the barcode. Also, if the humanreadable<br />
number is not clear, the delivery employee will not be able to<br />
read the PIC well enough to key the information into the scanner.<br />
Barcode Identifiers. Ensure that confirmation services barcode<br />
identifiers are clearly marked. The National Customer Service Center<br />
(NCSC) Certification Group certified your Delivery <strong>Confirmation</strong> service<br />
and/or Signature <strong>Confirmation</strong> service barcodes that meet our<br />
requirements specified in this publication. Periodically, check the<br />
barcode to ensure that the confirmation services label identifiers are still<br />
associated with the barcode.<br />
On occasion, for whatever reason, your mailing software may drop off<br />
confirmation services barcode identifiers (e.g., no horizontal bars above<br />
and below the barcode, no text identifying the Delivery <strong>Confirmation</strong><br />
service or Signature <strong>Confirmation</strong> service, no human-readable PIC below<br />
the barcode). Delivery employees are trained to scan the barcodes<br />
when all of these identifiers are present. Without all of them, there is no<br />
guarantee that a carrier will recognize the barcode as that of Delivery<br />
<strong>Confirmation</strong> or Signature <strong>Confirmation</strong> service and scan it.<br />
MOD 10 Check Digit. Ensure that the correct MOD 10 check digit for the<br />
barcode is calculated correctly. The Delivery <strong>Confirmation</strong> service and<br />
Signature <strong>Confirmation</strong> service barcodes must meet the barcode<br />
specifications outlined in Appendix G, Barcode Specifications, of this<br />
publication. Specifically, ensure that the MOD 10 check digit is correctly<br />
calculated for the barcode symbology that is used for the barcode<br />
specifications as outlined in Appendix G.<br />
Parsing the human-readable representation of the barcode. If the<br />
barcode has to be entered manually, you should group the<br />
human-readable presentation of the barcode into smaller groups of four<br />
numbers to allow easier manual entry by the delivery employee.<br />
<strong>Publication</strong> <strong>91</strong>, September 2002<br />
63