This validation ensures that the grid total (Other_Charges_Total) equals the sum of the line item totals (Total)
There are different methods to do this calculation. You can attach the following rule to the page's Close element:
The validation action looks a little unusual:
CalculateFields("'Total' = 'Other_Charges_Total'")The reference to Total sums all of the child fields that are labeled Total. The action then compares the sum to the Other_Charges_Total field.
