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# Just-in-Time Inventory Replenishment by Product Variant

# Overview
This report provides detailed insights into your inventory, focusing on Just-in-Time (JIT) replenishment for each product variant. It helps in optimizing inventory levels, reducing carrying costs, and ensuring product availability.

# Key Terms
* **SKU**: Stock Keeping Unit, a unique identifier for your product variants.
* **Vendor Lead Time**: Time taken by the supplier to deliver products after an order is placed.
* **Safety Stock Days**: The buffer stock to prevent stockouts.
* **Units Sold in Historical Period**: Total sales of a product variant in a specified period.
* **Avg Units Sold per Day**: Daily average sales for each product variant.
* **Quantity On-hand**: Current stock levels of each product.
* **Incoming Inventory**: Ordered stock that is yet to be received.
* **Days of Inventory Remaining**: Estimated time until the current stock runs out.
* **Reorder Point**: The stock level at which a new order should be placed.
* **Reorder Quantity**: Suggested quantity to order at the reorder point.
* **Unit Cost**: Cost per individual unit.
* **Reorder Cost**: Total cost for reordering the suggested quantity.

# Formulas for Reorder Point and Reorder Quantity
* **Reorder Point**: Calculated as `[Average Units Sold per day] x ([Vendor Lead Time] + [Safety Stock Days])`. This is the inventory level at which you should trigger a new order.
* **Reorder Quantity**: When the 'Quantity On-hand' falls below the Reorder Point, the reorder quantity is equal to the Reorder Point. If the on-hand quantity is higher than the Reorder Point, no replenishment is suggested.

# Using the Report
1. **Monitor Stock Levels**: Check the 'Quantity On-hand' and 'Days of Inventory Remaining' to understand current stock status.
2. **Identify Replenishment Needs**: Use the Reorder Point formula to determine when to reorder and the Reorder Quantity to know how much to order.
3. **Plan Purchases**: Use 'Reorder Quantity' and 'Reorder Cost' to plan your inventory purchases both in terms of quantity and budget.
4. **Evaluate Sales Performance**: 'Units Sold in Historical Period' and 'Avg Units Sold per Day' provide insights into the sales performance of each product variant.
5. **Manage Supplier Relations**: 'Vendor Lead Time' helps in planning orders considering the time it takes for products to be delivered.

# Tips for Effective Management
* Regularly review the report to stay ahead of inventory needs.
* Coordinate with suppliers for products with high sales velocity or long lead times.
* Adjust safety stock levels based on sales trends and seasonality.
* Use the data to negotiate better terms with suppliers, like reduced lead times or bulk purchase discounts.

# Conclusion
This report is a powerful tool for maintaining optimal inventory levels, avoiding overstocking or stockouts, and ensuring customer satisfaction through product availability.