Check number
Check number. This field is alphanumeric and has a size of up to 20 bytes.
Check Number#
Check number control digit. This field is alphanumeric and has a size of 1 byte.
Technical information
Communication Message Layout
Description of Fields:
Example of a credit card sale
Update history
Check number. This field is alphanumeric and has a size of up to 20 bytes.
Check number control digit. This field is alphanumeric and has a size of 1 byte.