MXWallet unique identifier.
You must provide Monext Online with an unique identifier that corresponds to one and only one buyer on your information system.
This identifier will be used when you request a payment by virtual wallet.
MXWallet ID must:
- Start and contain only an alphanumeric characters (A-Z, a-z, 0-9).
- May include dots ('.'), hyphens ('-'), and underscores ('_').
- Have a length between 1 and 50 characters.