Allowance amount 1 (relevant for the whole line)

invoic_Examples
 <price currency="EUR" unitGrossAmount="100.00" unitNetAmount="90.00" grossAmount="200.00" allowancePercent="10" allowanceAmount="10.00" netAmount="180" taxRate="25" taxAmount="50.00" netAmountIncTax="225"> 
invoic_XPATH

/b24Message/invoice/item/price/@allowanceAmount

invoic_Required
No
invoic_Type
Number
invoic_Sort
20500