Budget Control on Purchase with Stock

This module bridges purchase and stock budget control with a product-category inventory recognition policy and a company fallback:

• Vendor Bill: posting the bill releases the PO commitment and records budget actual. Outgoing stock operations do not affect budget.
• Stock Issue Valuation: posting the bill affects neither actual nor the PO commitment. Confirming an outgoing operation replaces the traceable PO commitment with a stock commitment; posting its valuation entry replaces that stock commitment with budget actual.

Each product category can use Company Default, Vendor Bill, or Stock Issue Valuation. The resolved policy is captured independently on each purchase order line and stock move, so mixed-policy purchase orders are supported and later configuration changes do not rewrite confirmed transactions. Returns preserve the original stock move policy.

Services and other non-storable products always use Vendor Bill. Stock Issue requires automated inventory valuation. It also applies to outgoing quantities that did not originate from a purchase (for example, manufactured stock) when their product category uses Stock Issue; a Vendor Bill category intentionally excludes all of its outgoing stock operations from budget.

Lot-tracked products release the exact source PO commitment. Non-lot products use company- and budget-period-scoped product FIFO across received PO lines, ordered by PO date. Quantity is converted between stock and purchase UoMs, and remaining commitment caps use company-currency values. Cancelling an outgoing operation restores its PO commitment, while a stock return reverses the issue actual without recreating the fulfilled PO commitment.

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