Version

Encapsulates the parameters for one error-correction block in one symbol version. This includes the number of data codewords, and the number of times a block with these parameters is used consecutively in the QR code version's format.

Encapsulates a set of error-correction blocks in one symbol version. Most versions will use blocks of differing sizes within one version, so, this encapsulates the parameters for each set of blocks. It also holds the number of error-correction codewords per block since it will be the same across all blocks within one version.

See ISO 18004:2006 Annex E