Hello! In which table is store connection/mapping between rows in transactionline table ? In my case I have an invoice with two items (itemtype= *'*Service'), for each of them there is a "TaxItem" line. I need to know which TaxItem for which Service item is. In [transactionline] there is not such column. Thank you very much :)

I think you need SuiteTax to get access to those fields/tables. It will be included as standard with NetSuite 2024.1 https://docs.oracle.com/en/cloud/saas/netsuite/ns-online-help/section_4316106593.html#subsect_53134704628

so, how would that be done with Legacy Tax?