Defer Bill

Defer (part of) a booked supplier bill — accountant (ZCT-876).

One transaction: a recognition schedule (type deferral, direction expense, balance account = the configured active accrual account, linked to the bill's document and item) and the reclass entry Dr that account / Cr pnl_account_code for exactly total_amount, dated on the bill's posting date — so the installments release what the reclass loaded and the expense is counted once. Installments already due post at once and are counted in posted; months with no period yet are reported in blocked_periods. total_amount may be less than the line (defer only the next year's share) but never more. Reversing the reclass entry later undoes the deferral and its schedule together; cancelling the schedule on its own is refused.