Decipher different taxation for each entry

Hello all, we have a small topic in data check. This regards 4 Elements: 1) Total net (Example : 80 $) 2) Total Gross (Example : 100 $) 3) Tax Ammount (Example : 20 $) 4) Tax % (Example 20%) This works if all entries have same taxation. But as some invoice entries might have different tax we are not able to pass the check 1-4 (Expected taxation).