AP invoice Liability Account replacement not applied on tax lines (SLA mapping)

Summary:

I am trying to replace the default liability natural account (401) with another account (404) based on the item expense account criteria in Subledger accounting

Objective:

If the item expense natural account starts with “230”, the liability account should be replaced by “404”.

Issue:

When the AP invoice includes Tax, oracle automatically split the liability into two accounting lines:

1. Liability for the item amount (HT) -> mapping works (404)
2. Liability for the tax amount (TVA) -> Mapping doesn’t not work (remains 401)

It seems the mapping set does not apply to the tax-related liability line.

Is there any Oracle documentation or best practice covering this use case?