In this FICO configuration we are able to assign valuation areas to accounting principles in relation with periodic processing.
Transaction: S_PL0_86000071
IMG Path: Financial Accounting (New) -> General Ledger Accounting (New) -> Periodic Processing -> Valuate -> Assign Valuation Areas and Accounting Principles
Tables: TACC_BWBER_PR
On the main screen you are able to connect valuation area to accounting principle.