ERROR: 'One or more of the selected items are allocated therefore cannot be deleted.'

You see this error when you saved the receipt to the customer's account first, then allocated it to an invoice later.

To delete the receipt:

1. Break the customer allocation.
2. Then, delete the customer receipt.

ERROR: 'You cannot delete VAT reconciled transactions.'

You see this error when you use the Cash Accounting VAT scheme, because customer receipts appear on the VAT Return.

If the receipt is on a draft VAT Return:

1. Delete the VAT Return.
2. Then, delete the customer receipt.

If the receipt is on a submitted VAT Return:

Reverse the receipt instead. You can only reverse a receipt that doesn't pay an invoice, so you may first need to unallocate the receipt from the invoice.