The template model allows any one of the choices listed below. However, some barcode formats either require a particular checksum or never allow a checksum. For such barcodes, the checksum property is ignored. Some of the remaining barcode formats support only a limited subset of these choices. For such barcodes, the template model does not specify an unsupported choice.
Reference_Syntax.checksum = “none | auto | 1mod10 | 2mod10 | 1mod10_1mod11″
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none (default)
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Note:
1 modulo 10, 2 modulo 10, and 1 modulo 11 are barcode standards. Refer to documentation on those standards for more information on those barcodes.
Form Model

checksum