Nonrecoverable tax Line default Account code

Following are the setup performed :

Setup 1:

Manage Mapping set (Payables) - XX_NON_REC_TAX_PAY

Output Type - Segment
Subledger Application - Payables
Input source - Invoice Business Unit Name
Value set - ORA_AP_ORGANIZATION_VS
COA - **** - Segment - Account
Input - Invoice Business unit Name
Account - XXXXXX

Setup 2:
Manage Account Rules - XX_NON_REC (from Mapping set)

Setup 3:

Manage Accounting Methods - Payables (Rule set - XX Invoice Accrual Basis)

Nonrecoverable Tax
Nonrecoverable Tax Accrual
Recoverable Tax

Setup 4:

Activate Subledger Journal Entry Rule Set Assignments

Requirement : To populate default XXXXXX Account segment once business unit is selected on AP invoice