The Customer Refund (and Supplier Payment)  form(s) is(are) designed like a cheque.  We rarely use cheques as most payments are done via online banking - I would suspect this is similar for most people.

The Cheque field on a supplier payment is limited to 30 characters whereas on the Customer Refund it is limited to 15 characters.

Due to this restriction we are having to post the payment and then edit the transaction to correct the reference to the longer one we want.

Suggest increasing the Cheque field on Customer Refunds to the same as Supplier Payments - 30 characters.