How is Tax Line on AP Invoice Distribution linked to Item Line

Hi,

I would like to know is there a table/column that links the item line in the ap_invoice_distribution_all table with a corresponding recoverable tax distribution line. The only column in the ap_invoice_distribution_all to link them from what I can see is the TAXABLE_AMOUNT column (which shows the item line amount).

I have seen posts referencing the JAI_AP_MATCH_INV_TAXES table but this table is null for us.

Any advise would be appreciated, thank you

J