IT1
Baseline Item Data (Invoice). The X12 invoice line segment in Transaction Set 810 Invoice.
Definition
The IT1 (Baseline Item Data – Invoice) segment carries an invoice line in an X12 810 Transaction Set. It contains a line identifier, invoiced quantity, unit of measure, unit price, price qualifier, and the product identifier (UPC, EAN, GTIN, or internal code).
Origin
IT1 is defined by X12.6 within Transaction Set 810 (Invoice), maintained by ASC X12 since 1979. In 810 it plays the role that PO1 plays in 850 (Purchase Order).
Example in context
IT1**100*EA*12.50**UP*012345678905~Here, the line invoices 100 units (EA) at 12.50 each, with UPC product code 012345678905. The qualifier UP states that the identifier follows UPC convention.