Hi Rebecca,
Is this Receivables or Payables? I presume AR because one cannot create manual checks and not apply to invoices, unless it was a pre-payment.
The solution for low-volume corrections is to create a $0.00 cash entry for the customer, and apply it first to the payment and then to the invoice. Everything will net to zero and no accounting transactions will be generated. The customer statement will not display this correcting entry if you choose to print statements and only show outstanding transactions - this would also suppress the payment and invoice that were matched together. If the desire is to print the invoice and payment on the statement after they are matched, the correction will also appear, and there is no way around that.
If there are too many of these to do manually, you can use the write-off function in AR to do the matching in a slightly different way. Write off all customer balances with a range of 0.00 to 0.00. That will create an adjustment batch automatically only for customers that have transactions that all net to 0.00. The same considerations for printing statements and outstanding transactions only apply here as for above.
I'm not sure how to enforce entry staff to not enter invoices and credit notes as the desired document type. Better training is the best answer. Perhaps one way is to create a customer Alert for every customer that only pops when entering OE Credit Notes that asks 'Are you sure you want to create a credit note?' But Alerts are not importable, so this would be arduous to set up.
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Regards,
Softrak Tech Support