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All invoice items within the Invoice can be cancelled, with the following exceptions:
Merge All cancellation-type invoice and invoice items can not be cancelled until further noticeWith version 2.167 “Merge All Cancellation” type Invoice and invoice items can be canceled unless those are cancelation invoice items. So even when you try to cancel a full Merge All Cancelation type invoice only invoice items that have no connected items as a reference (Cancelation items) will be canceled.
Package component-related invoices do not have the functionality to cancel Invoice items unless further notice
Only valid invoice items will be displayed for cancellation, e.g no cancelled invoice items will be displayed
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