I think a cancellation of the old invoice and match with the new invoice again would reverse the flow flawlessly.

This way the inventory postings and I vouchers will get replaced without impacting the financial accounting.

Hi Rigslrosh,

Thank you for your answer.

I agree this will be a solution, but for what I understand, I am not able to cancel an invoice when is PaidPosted.

If it has gone up to Paid Posted I guess then the  business should expect a credit note from supplier on additional payment done. That can be matched as a credit manual supplier invoice and set off the over payment.

The dollar amount paid was the corresponding to 20 units, the invoice received total, but at the moment of manually matching the lines, 140 units were selected. > fortunately, this misstep didn't change the dollar amount to the proportional to the 140 units.

What I need is to fix the PO lines and revert the original posting.

in the RNYI report, this PO line has a negative amount. I need to revert that.

would a penny invoice worked with a negative amount of PO units? 

Put excess quantity with 'to be inspected' and make it return/rework. After, create 0 value invoice and match with the return/rework quantity.

Thank you so much for your answer, as I am not an expert on Navigating through IFS, could you please guide me to the module that option is? - Thank you.

Can anyone help me with a little more insight on the option ‘To be inspected’? what module is it located? - Thank you.