If the expense has been accrued then it will have been recognised/expensed through profit or loss, and if it has been deducted for tax purposes then it will have been deducted in calculating PCTCT.
As the expense has gone through both at the same time, i.e. accounting profits and tax profits, then there is no temporary difference. An example would be an accrual for rent or gas/electricity. They will be expensed in the period to which they relate and they will be allowable for tax in that same period too.