1-9 Verifying the Accuracy of the MMS

The Postal Service verifies the accuracy of the MMS by selecting mailpieces at random and comparing the pieces with the manifest.

1-9.1 If the sampling indicates that the total postage or total weight of the pieces sampled is understated by more than 1.5 percent, the Postal Service adjusts the total postage for the mailing accordingly.

1-9.2 If postage is overstated by more than 1.5 percent, no postage adjustments are made. (See Exhibit 22 for examples of these calculations.)

1-9.3 The Postal Service uses the ±1.5-percent accuracy level to determine the quality of the manifest system. Continual submissions of mailings that exceed the ±1.5-percent accuracy level may result in suspension of MMS privileges.

1-9.4 The mailer has the option to rework a mailing rather than pay a postage adjustment. The entire mailing must be reprocessed and submitted with new documentation.