Adjustment documents inherit every constraint of the invoice they reference — plus a few of their own.
Must reference the original invoice's UUID and hash. If the original invoice hasn't cleared yet, or cleared with warnings, the credit note can be rejected or flagged for manual review depending on the authority's rules.
Same referencing requirement as a credit note, plus its own tax calculation on the additional amount — rounding must be consistent with how the original invoice calculated tax.
If a credit note is submitted before its original invoice has fully cleared, the reference lookup fails. dsFatoora enforces submission order so this can't happen even under high concurrency.
Crediting a single line item out of a large consolidated/summary invoice requires precise line-level referencing — a common source of validation failures at high line-item volumes.