'Delete' is NOT allowed. Once E-Invoice is activated, the delete 'X' icon for individual and batch AR Invoices, which was available to Administrator users, will no longer be available.
For Batch Generated AR Invoices, the delete 'X' icon for the latest batch will be replaced with a 'Cancel' button.
Cancellation of any E-Invoice documents submitted to LHDN is ALLOWED within 72 hours of its generation.
After the 72-hour period, cancellation will NOT be allowed.
'Edit' is NOT allowed for any E-Invoice documents submitted to LHDN (including E-Invoices, Debit Notes, Credit Notes, and Self-Billed documents).
Since 'Edit' is NOT allowed, you can only adjust the the amount of an E-Invoice by issuing either an AR Debit Note or AR Credit Note.
You will have to issue an AR Credit Note with the same amount as the E-Invoice that you wish to 'cancel' and APPLY it to the specific E-Invoice you wish to 'cancel'.
This is not an actual cancellation, but it is the only way to effectively 'zero-out' the E-Invoiced amount.
For Credit Notes applied to E-Invoice Items, the entire Credit Note's amount must be fully applied.
For E-Invoicing, AR Invoice is the only way that Income can be submitted to LHDN.
If you want all Income that appear in your I&E (Income & Expenditure Statement) to be submitted to LHDN, then you will have to use AR Invoice to record all Income.