ACS Ancillary Charges
To identify additional charges and payment terms for shipment charges that may or may not be directly related to a line item
ACS01 for a line item: is the freight or special charge; for the total invoice: the total charges -- expressed in the standard monetary denomination for the currency specified.
Code identifying type of special charge or allowance
If ACS02 contains the value "999" (indicating Other), then ACS03 is required to identify the charge.
A free-form description to clarify the related data elements and their content
Code identifying payment terms for transportation charges