How can we improve WHMCS?

Ability to pass Level 2 Data through the gateway which is considered business-to-business transaction information. It is supported by the Authorize.Net and many other merchant providers and can be passed with every transaction. The information is typically used by Merchant Service Providers to qualify lower rates on transactions made using corporate purchasing cards. This would potentially give better rates on corporate card transactions for WHMCS users.

Typical fields for this type of information include:

Tax
Tax Exempt Status
Duty
Freight
PO Number