ERROR_CORRECTION

Specifies what degree of error correction to use, for example in QR Codes. Type depends on the encoder. For example for QR codes it's type ErrorCorrectionLevel. For Aztec it is an Int, representing the minimal percentage of error correction words. For PDF417 it is an Int; valid values are 0 to 8. In all cases, it can also be a String representation of the desired value as well. Note: an Aztec symbol should have a minimum of 25% EC words.