#Inventory flow overview

Below is a high-level flow of inbound and outbound movements.

flowchart LR
  Vendor -->|Purchase Order| PO[Purchase Orders]
  PO -->|Receive| GRN[Goods Receipts]
  GRN -->|Write| SL[Stock Ledger]
  SL -->|On-hand qty increases| WH[Warehouses]
  SL -.-> LOC[Locations]

  Customer -->|Order| SO[Sales Orders]
  SO -->|Pick/Ship| SH[Shipments]
  SH -->|Write| SL2[Stock Ledger]
  SL2 -->|On-hand qty decreases| WH

  subgraph Master Data
    ITEMS[Items] --UOM--> UOM[Units of Measure]
    ITEMS -.tags.-> TAGS[Product Tags]
    ITEMS -.brand.-> BR[Product Brands]
    ITEMS -.category.-> CAT[Product Categories]
  end

Notes:

• Goods Receipts write "in" movements to Stock Ledger.
• Shipments (future) will write "out" movements to Stock Ledger.
• Locations are optional bins within a Warehouse.
• Units of Measure (UOM) define how quantities are measured (e.g., EA, BOX).