Not able to find "Invoice Self-assessed Tax amount" at the Invoice line folder in Payables Transacti

Summary

We are trying to get the Invoice Self-Assessed tax amount at the Header level and also at the line level from Payables Invoices - Transactions Real time subject area.

Content

We are trying to get the Invoice Self-Assessed tax amount at the Header level and also at the line level from Payables Invoices - Transactions Real time subject area. The information is available for Invoice header under

Payables Invoices - Transactions Real time > Invoice Details> Invoice Amounts.  But the same value is not available for Invoice line. 

Payables Invoices - Transactions Real time > Invoice Lines> Invoice Line Amounts

Any idea how we can get this info?