The second outer box label makes the stored information of the inner box 2D barcode available from the outer box.
The second outer box label is an aggregation of individual 2D barcodes of all inner boxes contained by the outer box. The format follows the inner box 2D barcode and uses the ampersand (&) symbol as a delimiter between inner box 2D barcodes.
The basic format for the label is Inner box 2D1&Inner box 2D2&Inner box 2D3 and so on.
Depending on the size of the outer box label, there could be up to ten inner boxes in one outer box. Thus, the aggregated inner box 2D barcode will also have up to ten inner box 2D barcodes.
Figure 1. Full format for combined inner box 2D barcodes
Note: The ampersand (&) symbol is placed between the 2D barcode of each inner box.