User receives an error when trying to edit or delete an invoice
"A payment has been made against this Invoice / Adjustment".
Once an Order Entry invoice has been paid in Accounts Receivable or had a credit applied to it, it can no longer be edited or deleted in order entry. Even if the payment or credit is reversed, changes cannot be made. Instead of deleting the sales invoice, it will need to be converted into a credit memo. This will only be possible if your company is configured for it, through transaction definitions.
Other transaction types which will not allow edit or deletion of an OE invoice are:
When receiving payment from a customer, if you applied a credit memo created in Order Entry to a transaction created in Order Entry, you will not be able to reverse/delete the payment nor the transaction. The best option is to recreate the invoice.
If you applied a credit memo adjustment created in the Accounts Receivable module to a transaction created in Order Entry, you will be able to reverse the adjustment (which reverses the application of payment) to reapply payment to the transaction, but you will not be able to delete the transaction.
If you received the payment as a normal form of payment (via cash, check, eft etc.) you will be able to reverse the payment through the receipt register to reapply a payment to the transaction, but you will not be able to delete the transaction.