Is there supposed to be a fixed number for DVD's (digit #11)? The uniform code council gave me my 6 digit number, so that represents the first 6 numbers. You come up with your own numbers for digits 7 through 10. With CD's the 11th digit is supposed to be a "2", then the last number is automatically generated. But what number is the 11th digit supposed to be (for a DVD)?

http://www.mecsw.com/specs/upc_a.html

Looks like 9 to me..

Or this..

Barcodes have many formats. UPC-A is the commonly used in the United States. A UPC-A barcode has 12 digits, with one on the leftmost and one on the rightmost separated from two groups of 5 digit numbers. The first group of 5 digits identifies the owner of the barcodes, and the other group of 5 digits can be assigned by the barcode owners

The first digit bears the following meanings.

* 0 - Regular UPC codes
* 2 Variable weight items marked at retail stores
* 3 Drug or health related items
* 4 - Free form barcode for non-food items
* 5 - Used for coupons
* 7 - Regular UPC codes.

The last digit is a Modulo 10 checksum. If enabled, it is a mechanism for checking reading error.

For CD and DVD products, the last digit of the second 5-digit group (or the 11th digit) should tell what kind of product the barcode is. CD products should have this digit set to 2 and DVD products should be 9. If you need to buy barcodes from third party, make sure to request your barcodes with this convention.