Map GP sites and locations onto the operational site and warehouse hierarchy, resolve in-transit transfer behaviour that can be either a transit warehouse or an intercompany chain, and design an on-hand load that survives valuation reconciliation.
Inventory is where the organisational, product and posting decisions all become visible at once. The site topology comes from organisational modelling. The item groups and valuation policy come from product modelling. The transfer and adjustment posting comes from the crosswalk.
The mapping is composite by definition. Work through each GP site and place it in one of four categories.
The GP pattern is a transfer that moves stock through an in-transit site. The default target pattern is a transfer order with an issue event and a receipt event, using a transit warehouse to hold goods in motion.
GP holds valuation method against items, potentially varying by site. The target expresses costing policy through an inventory model group assigned to the released product, which is a governed policy object rather than a per-record setting.
Freeze point. One agreed moment at which source inventory is authoritative — the same moment used for open documents. Extract quantity and value by item, site and, where relevant, batch or serial identity.
Amid three high-risk posting rules, inventory adjustment and count variance is rated low collapse risk, and it is worth using as an early proof point.
The dependency-ordered plan places inventory positions after open sales and purchase orders and before open receivables, payables and general ledger opening balances. The logic is that open documents define what is committed, inventory defines what is present, and the ledger reconciles both.
Supported by the source material: the site-to-warehouse mapping shape, the in-transit ambiguity and its two target patterns, the posting rules and their risk ratings, and the archive-over-migration position on history.
A GP site is not one concept. Classify each as a physical location, a policy boundary or an in-transit construct before mapping anything. In-transit transfers have two possible target patterns. A transit warehouse inside one legal entity, or an intercompany chain when the construct carries statutory meaning.