How can we improve WHMCS?

The refund functionality in WHMCS 5.3.13 is not on accordance with UK legislation.

When a refund is issued, the system must generate a Credit Note with the following details:

• be headed ‘credit note’ or ‘debit note’ as appropriate and show clearly all the following details:
• the identifying number and date of issue
• the name, address and registration number of the supplier
• the name and address of the customer
• the reason for its issue - for example, ‘returned goods’
• a description which identifies the goods or services for which credit is being claimed or allowed
• the quantity and amount for each description
• the total amount credited, excluding VAT
• the rate and amount of VAT credited
• the number and date of the original VAT invoice - if you cannot do this (for example, because returned goods cannot be identified with a particular invoice), you must be able to satisfy us by other means that you accounted for VAT on the original supply

Reference: https://www.gov.uk/government/publications/vat-notice-700-the-vat-guide/vat-notice-700-the-vat-guide#credits-and-debts

The current system of issuing a revised invoice contravenes UK VAT legislation and makes WHMCS unusable for UK VAT purposes when it comes to refunds.

The main issue I can see is that currently the date of the refund is not recorded as separate entry, neither is the reason for the refund nor is a unique number applied. The renaming of the document to "Credit Note" should be straight forward.