Sometimes the "Cancel" icon is engaged, which makes it impossible to cancel the "Purchase & Pay" transaction.
This is the case when the period in which the transaction to be reversed is located in a closed bank reconciliation. It is not necessary for the transaction to be selected as part of the period's disbursements in the bank reconciliation to prevent its reversal. It is sufficient that the bank reconciliation for the period in question is completed and closed to prevent the transaction from being reversed.
This is also the case when the period in which the transaction to be reversed is located is subject to a tax rebate in the software.
Results:
If only the bank reconciliation is done for the period in question, opening it will make the "Cancel" icon available again;
If the tax refund is made for the period in question, it will not be possible to make the "Cancel" icon available again. It will then be necessary to counter the "Purchase & Pay" with the reverse transaction, i.e. a "Credit & Refund", which will be taken into account in the next tax refund.