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Cancellation pre-invoice items must adhere to the same rules as general pre-invoice generation.
For closed accounting periods, cancelation pre-invoice items are assigned to the next open accounting period. If no pre-invoice exists, one is created.
For open accounting periods, cancelation pre-invoice items are assigned to a matching pre-invoice. If none exists, a new pre-invoice is created.
Pre-invoice items for periods with a later closed accounting period behave as the period is closed.
The rules are same as that of Delta Preinvoice Generation
Invoice and Invoice Item Cancelation
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