I have allocated a wrong cost as additional cost to a goods
Then to reverse it, I was processing return and debit and been posted.
But I realise that It wasn't captured correctly.
In meantime I already allocated the cost to its right good allocation.
Now I have like double writtings of supplier invoice to view my trial balance.

How do I Process to reverse the first supplier invoice and the incorrect return and debit that supposed to reverse the latter.
Note that it was captured as additional cost to be links with an inventory item.

Any help from ya there is much appreciated.