Stock rules are the rules that define the minimum and maximum quantities of hardware assets in a stockroom1.

Stock rules help to optimize the inventory levels and avoid overstocking or understocking of hardware assets1.

Stock rules have the following purposes:

To automatically transfer assets when a low quantity threshold is detected in a stockroom: This means that when the quantity of a hardware asset in a stockroom falls below the minimum threshold defined by the stock rule, the system automatically creates a transfer order to replenish the stockroom from another stockroom that has excess quantity of the same asset1.

To send notifications when a low quantity threshold is detected in a stockroom: This means that when the quantity of a hardware asset in a stockroom falls below the minimum threshold defined by the stock rule, the system sends an email notification to the stockroom manager or other stakeholders to alert them of the low inventory level1.

Therefore, the purposes of stock rules that are also options in the question are A. To automatically transfer assets when a low quantity threshold is detected in a stockroom and C. To send notifications when a low quantity threshold is detected in a stockroom.

The other options that are not purposes of stock rules are:

To track stock orders from a vendor: This is not a purpose of stock rules, but a function of purchase orders. Purchase orders are the records that capture the details of the vendor contracts for procuring hardware assets2. Purchase orders help to track the status, quantity, and cost of the stock orders from a vendor2.

To track stock movement between stockrooms: This is not a purpose of stock rules, but a function of transfer orders. Transfer orders are the records that track the movement of hardware assets between stockrooms3. Transfer orders help to track the source, destination, quantity, and status of the stock transfers between stockrooms3.

To send notifications when a stock shipment arrives at a stockroom: This is not a purpose of stock rules, but a function of stock order tasks. Stock order tasks are the tasks that track the fulfillment of asset requests from stockrooms4. Stock order tasks help to send notifications when a stock shipment arrives at a stockroom and when the assets are received and verified4. References:

1: Stock Rules

2: Purchase Orders

3: Transfer Orders

4: Stock Order Tasks