Create chargeback using Transaction workbench?

Hi

Does anyone know if it is possible to enter chargebacks using the transaction workbench please?  We are using 12.1.3.

When we try and enter a chargeback using the transaction workbench we get the message "You cannot enter chargebacks in this form.  Please enter chargeback in the Receipts Workbench":

• The manual says "Use the Transactions Workbench to create new and update existing invoices, debit memos, credit memos, on-account credits, chargebacks, and commitments within Receivables"
• But I think that a chargeback is tied to either an invoice or a receipt, so in many ways it makes sense that you cannot enter them as a standalone transaction.