Required

When set to Required, both the main and the supplemental symbols must be read or a single No Read condition results.

For example, if Supplementals is set to Required, Separator is enabled, and an asterisk is defined as the UPC separator character. Then the data is displayed as:

MAIN * SUPPLEMENTAL.

Note: Under no circumstances will the supplemental symbol data be sent without a main symbol.

Note: If additional symbols-other than the main or supplemental-will be read in the same read cycle, Number of Symbols should be set accordingly.