> ## Documentation Index > Fetch the complete documentation index at: https://docs.arcuserp.com/llms.txt > Use this file to discover all available pages before exploring further. # List inventory movement history > Returns a paginated list of inventory transactions for the entity, ordered by transaction date descending. Supports filtering by `product_id`, `location_id`, `transaction_type` (receive / adjust / transfer / fulfill / return), and a `date_range`. Each transaction shows the quantity delta, pre- and post-transaction balance, and the source document (order, PO, adjustment). Requires `inventory:read` scope. ## OpenAPI ````yaml /openapi.yaml get /inventory/transactions openapi: 3.1.0 info: title: Arcus ERP Public API version: 1.0.0 description: > Arcus ERP public REST API. Designed for external integrations and data migration. **Authentication.** Bearer token (API key) via the `Authorization` header. Format: `Authorization: Bearer ark_live_ent__` (or `ark_test_*` for sandbox). API keys are issued per-entity in **Settings > Developers > API Keys**. **Entity scoping.** The entity is encoded in the API key prefix; routes are flat (e.g. `/v1/accounts`, `/v1/orders`, `/v1/products`). A small set of platform endpoints (migration, reconciliation, events, webhook endpoints, API keys) use the `/v1/entities/{entity_id}/...` form -- those are noted in their tags. **Key capabilities.** - Related-resource hydration via `?expand[]=` (see `x-arcus-expand` on each resource). - Cursor-based pagination (`starting_after` / `ending_before` / `limit`). - Idempotency via the `Idempotency-Key` header. - Webhook events for asynchronous notification. - Conditional requests / ETag for cache validation. servers: - url: https://api.arcuserp.com/v1 description: Arcus ERP API (accepts both live `ark_live_*` and test `ark_test_*` keys) - url: https://dev-api.arcuserp.com/v1 description: >- Dev sandbox API (test-only data, accepts `ark_test_*` keys against dev RDS) security: [] paths: /inventory/transactions: get: tags: - Inventory summary: List inventory movement history description: > Returns a paginated list of inventory transactions for the entity, ordered by transaction date descending. Supports filtering by `product_id`, `location_id`, `transaction_type` (receive / adjust / transfer / fulfill / return), and a `date_range`. Each transaction shows the quantity delta, pre- and post-transaction balance, and the source document (order, PO, adjustment). Requires `inventory:read` scope. operationId: listInventoryTransactions parameters: - name: product_id in: query schema: type: string format: uuid - name: location_id in: query schema: type: string format: uuid - name: type in: query schema: type: string enum: - receiving - order_reservation - partial_reservation - return_received - transfer_in - adjustment - audit_count - quarantine - release_quarantine - sale - order_cancelled - purchase_cancelled - rma - transfer_out - warehouse_loss - build_assembly - freeze - return_receive - restock - writeoff - cross_transfer_out - cross_transfer_in - vendor_return_out - vendor_replacement_in - fba_inbound - fba_return - order_reservation_release - fulfillment_consumption - build_consume - build_produce - build_return - build_scrap - name: date_after in: query schema: type: string format: date - name: date_before in: query schema: type: string format: date - name: page in: query schema: type: integer minimum: 1 default: 1 - name: per_page in: query schema: type: integer minimum: 1 maximum: 100 default: 25 responses: '200': description: List of inventory transactions content: application/json: schema: type: object properties: object: type: string enum: - list data: type: array items: $ref: '#/components/schemas/InventoryTransaction' total: type: integer page: type: integer per_page: type: integer total_pages: type: integer '401': $ref: '#/components/responses/Error' '403': $ref: '#/components/responses/Error' security: - ApiKeyAuth: [] components: schemas: InventoryTransaction: type: object description: Inventory movement ledger row. Immutable once created. properties: id: type: string format: uuid entity_id: type: string format: uuid product_id: type: string format: uuid location_id: type: string format: uuid type: type: string enum: - receiving - order_reservation - partial_reservation - return_received - transfer_in - adjustment - audit_count - quarantine - release_quarantine - sale - order_cancelled - purchase_cancelled - rma - transfer_out - warehouse_loss - build_assembly - freeze - return_receive - restock - writeoff - cross_transfer_out - cross_transfer_in - vendor_return_out - vendor_replacement_in - fba_inbound - fba_return - order_reservation_release - fulfillment_consumption - build_consume - build_produce - build_return - build_scrap quantity: type: integer description: Signed delta (positive=inbound, negative=outbound) before_on_hand: type: integer after_on_hand: type: integer unit_price: type: number total_price: type: number status: type: string order_id: type: string format: uuid nullable: true journal_entry_id: type: string format: uuid nullable: true product_title: type: string location_name: type: string created_at: type: string format: date-time ErrorEnvelope: type: object description: | Canonical error response envelope. All API errors use this shape. required: - error - code properties: error: type: string description: Machine-readable error key example: not_found code: type: string description: Machine-readable error code (often same as error) example: not_found type: type: string enum: - validation_error - permission_error - not_found - conflict - rate_limit - internal - expand_error - not_implemented example: not_found hint: type: string description: Human-readable one-sentence explanation (English) example: >- The requested order does not exist or does not belong to this entity. param: type: string description: The parameter that caused the error, if applicable example: expand[0] required: type: string description: The scope required (only on insufficient_scope errors) example: accounts:read request_id: type: string description: >- Unique request ID for support tracing (maps to CloudWatch log stream) example: req_abc123 responses: Error: description: Error response (400/401/403/404/409/422/429/500) content: application/json: schema: $ref: '#/components/schemas/ErrorEnvelope' securitySchemes: ApiKeyAuth: type: http scheme: bearer description: | API key issued per entity via Settings > Developers > API Keys. Each key carries scopes (e.g. orders:read, products:write). Bearer token format: Authorization: Bearer ark_live_ent__ Test keys use ark_test_ent__. Both are issued per entity via Settings > Developers > API Keys. ````