# One Pipe System

This context captures the business language used by the admin system for orders, assets, finance operations, and operational batch tasks.

## Language

**Voucher attachment**: A user-provided proof file attached to an order, refund, recharge, or operational task. Voucher attachments may contain any file type and a business record may hold multiple voucher attachment keys. _Avoid_: Voucher image, comma-separated voucher string

**Voucher key list**: The canonical representation of voucher attachment object-storage keys at the frontend and API submission boundary. Legacy single-key strings or comma-separated strings may be read and normalized for display, but new submissions use key lists. _Avoid_: Comma-separated voucher string

**Batch import file**: The structured data file that drives an asynchronous operational batch task. Unlike voucher attachments, a batch import file is constrained by the task's required template format. _Avoid_: Voucher, attachment

**Operational batch task**: An asynchronous admin task created from an uploaded batch import file and tracked through task status, counts, operator identity, and failure details. _Avoid_: Inline order operation, synchronous import

**Operational remark**: A note captured when an admin creates a financial or operational record. Operational remarks are retained for later review and are not edited after creation. _Avoid_: Editable comment, processing note

**Recharge order**: A C-side asset recharge order created when a user recharges an IoT card or device asset wallet. It is identified by `recharge_order_no`, is associated with `resource_type` and `resource_id`, and may be rejected while pending payment. _Avoid_: Agent recharge order

**Rejected recharge order**: A recharge order that an admin has rejected before payment because the recharge request should not proceed. Rejection is an irreversible terminal state and does not involve refunds. _Avoid_: Refunded recharge, closed recharge

**Agent recharge order**: A financial recharge record for an agent/shop wallet in the admin finance module. It uses a different API contract and status model from C-side recharge orders. _Avoid_: Recharge order
