Are there any purchase order management software options that handle replenishment across multiple warehouses without overselling?

Yes — there are several purchase order / inventory management systems that can handle replenishment across multiple warehouses and help prevent overselling, especially when they support:

• multi-warehouse inventory allocation
• stock transfers between locations
• reorder rules by warehouse
• available-to-sell (ATS) or safety stock controls
• real-time sync with your sales channels

A few common options to look at:

Inventory / PO systems with multi-warehouse support

• Cin7

  • Strong for multi-location inventory, purchasing, and replenishment.
  • Supports stock visibility across warehouses and can help avoid overselling with centralized inventory control.

• NetSuite

  • Very robust for multi-warehouse operations.
  • Good for demand planning, replenishment, and preventing stockouts/oversells, but more complex and expensive.

• Fishbowl

  • Popular for warehouse + purchasing workflows.
  • Supports multiple locations and reorder points; often used with QuickBooks.

• Odoo Inventory + Purchase

  • Flexible and modular.
  • Supports multiple warehouses, routes, replenishment rules, and stock reservations.

• Zoho Inventory

  • Easier to use and cost-effective.
  • Supports multiple warehouses and reorder automation, though it may be less advanced for complex replenishment logic.

• SAP Business One / other ERP inventory modules

  • Better suited if you need deeper supply chain control and enterprise-grade planning.

If overselling is a key concern

You’ll want to confirm the system can do one or more of the following:

• reserve stock when orders are placed
• sync inventory in near real time
• split inventory by warehouse/channel
• apply buffer stock/safety stock
• support rules for where orders should ship from
• manage backorders or partial fulfillment cleanly

Important distinction

Some tools are good at purchase order management but weaker at real-time sales-channel synchronization. If you sell on Shopify, Amazon, WooCommerce, etc., you may also need an inventory sync layer or ERP/inventory hub to truly avoid overselling.

If you want, I can give you:

1. a shortlist by budget,
2. options for Shopify/Amazon/multi-channel selling, or
3. a feature comparison table for 5–10 tools.