AR - Write Off Accounting Issue

We have an accounting issue when making an adjustment to a receivables transaction where the accounting differs on the adjustment from the original transaction accounting.  The transaction accounts the net and tax values separately, whereas the adjustment accounts the total invoice value in one lump sum.

Our adjustment is set up as a receivables activity and the settings are Type = Adjustment, GL Account Source = Revenue on Invoice, and Tax Code Source  = Invoice.  When making the adjustment we select Type = Line, this fixes the accounting issue, however if the person making the adjustment cannot approve the value, Oracle puts it into the approval queue, and then it prevents the approver (who has sufficient approval limit) from approving the adjustment in the Approve Adjustment window (error message).  Error message: