ItemTotal should be ItemTotal = TaxableValue + IGSTAmount + CGSTAmount + SGSTAmount + CessAmount + StateCessAmount + StateCessNonAdvaloremAmount + CessNonAdvaloremAmount + OtherCharges OR ItemTotal = TaxableValue + OtherCharges

ItemTotal should be ItemTotal = TaxableValue + IGSTAmount + CGSTAmount + SGSTAmount + CessAmount + StateCessAmount + StateCessNonAdvaloremAmount + CessNonAdvaloremAmount + OtherCharges OR ItemTotal = TaxableValue + OtherCharges

You will receive this error when ItemTotal is not as per calculation while uploading file in portal.

The Item total should be as per the provided calculation.

It should be the summation of the taxable value and the tax amounts.