9ac62e3967
Introduce nine source-backed rules with original AL sample pairs, bounded SCM review routing, and complete positive/clean evaluation coverage. Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
3.3 KiB
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Use date-aware availability for promising
Description
Item.Inventory is an on-hand quantity, not an available-to-promise answer. Promising additional demand must account for the requested date, location and variant, reservations, scheduled receipts, existing requirements, and demand within the configured lookahead. An on-hand comparison can promise inventory already committed elsewhere and miss incoming supply.
Best Practice
For an additional demand not already recorded on a source line, use "Available to Promise".CalcQtyAvailableToPromise with the Item's location/variant filters, date range ending on the shipment date, and the configured period/lookahead horizon. Compare in base units. Use a fresh calculation context or the codeunit's recalculation support rather than carrying cached quantities between unrelated items or requests.
For an existing sales-line change, retain the source-aware order-promising/availability workflow, which accounts for the line's own quantity or delta; blindly applying an additional-demand calculation can double-count that line. Assembly and production requirements/supply likewise need the standard availability context, not just a sales-only stock subtraction.
An ATP result is not a reservation or a guarantee of warehouse pickability. Lot/serial constraints, bins, warehouse activity, and later concurrent changes still need their own checks. Conversely, an on-hand display, valuation report, or deliberately immediate-stock-only check is allowed to use Item.Inventory; do not replace its distinct business question with ATP.
Anti Pattern
Report CalcFields(Inventory) or an equivalent sum of item ledger quantities used as the complete decision for a dated additional-demand promise, including code that applies location/variant filters but ignores other demand and supply. Require explicit promising intent; an Inventory FlowField read alone is not a finding.
Also report a visible loss of location, variant, date, or source-line context in that calculation. Do not invent missing demand in an unseen caller or require this exact API when a visible supported workflow already supplies the correct availability semantics.