The following are general restrictions for adjusting invoices. For restrictions for adjusting particular fields, see:
REVERSING DISTRIBUTIONS AND ENCUMBRANCE ACCOUNTING: If you use encumbrance accounting and you reverse a validated invoice distribution, Payables automatically creates an encumbrance reversal entry that reverses the invoice distribution encumbrance entry created when you validated the invoice. You cannot update the reversed invoice distribution because Payables will use it to create the reversing encumbrance entry.
ADJUSTING DISTRIBUTIONS ON INVOICES THAT CROSS BALANCING SEGMENTS: If Automatic Offsets is enabled and the invoice contains distributions that are charged to more than one balancing segment, you cannot add, delete, reverse, or update distributions once the invoice is paid or partially paid.
CANCELLED INVOICES: If you have cancelled an invoice, you cannot adjust any invoice or invoice distribution information for that invoice. However, under certain conditions, you can delete it.
FINAL MATCHED: You cannot adjust an invoice that has distributions marked as Final Matched. You can disable the distribution's Final Match check box if you have not submitted Invoice Validation for the invoice. After you submit Invoice Validation for a final matched invoice and Payables validates the invoice, you cannot make adjustments to the invoice or reopen the purchase order.
INTEREST INVOICES: You cannot adjust an interest invoice if the payment that paid it has been accounted.
INVOICES SELECTED FOR A PAYMENT BATCH: You cannot adjust an invoice that has been selected for payment in a payment batch. You can wait until the payment batch completes and then adjust the paid invoice.
REVERSING DISTRIBUTIONS WITH INVALID ACCOUNTS: You cannot reverse an invoice distribution that has an invalid account.
WITHHOLDING TAX: If you have enabled withholding tax and you choose to have Payables automatically create invoices to a tax authority, you cannot modify the distributions of that invoice.
DELETING DISTRIBUTIONS. If you have reversed a distribution, you cannot delete it or the associated reversal line. If a distribution line has been encumbered, you cannot delete it.