How Epicor Available to Promise Works
ATP helps sales and planning teams evaluate demand against supply over a specified period. Rather than relying only on the quantity currently visible in a warehouse, the business considers existing reservations and expected inventory movements. The exact calculation and display depend on the Epicor product, configuration, planning rules, and transaction status.
The process typically brings together several inventory and order details:
- On-hand inventory: Stock currently recorded in the system and eligible for fulfillment.
- Allocated inventory: Quantities already reserved for existing orders or production requirements.
- Scheduled receipts: Expected inventory from purchase orders, production jobs, or other replenishment activities.
- Demand commitments: Open sales orders and other requirements that consume available supply.
- Required date: The date by which the customer needs the product delivered or ready for shipment.
Reviewing these elements helps the sales team offer delivery commitments that reflect inventory and replenishment plans.
Available to Promise Calculation and Example
An illustrative ATP calculation for a single product and time period is:
Available to Promise = Eligible On-Hand Inventory + Confirmed Incoming Supply − Existing Commitments
Assume a business has 800 units on hand, expects 250 additional units to arrive before the requested delivery date, and has already committed 600 units to existing demand.
Available to Promise = 800 + 250 − 600 = 450 units
Under these assumptions, the business has 450 units available to promise for additional demand. This simplified calculation assumes the incoming supply arrives on time, all quantities are eligible for fulfillment, and no other requirements consume the inventory. In practice, ATP may be time-phased, meaning that a quantity available next week cannot necessarily satisfy an order required today.
An Available To Promise Calculation therefore needs to account for the relevant date, demand commitments, and supply timing. Businesses should confirm the calculation used by their specific Epicor environment before applying it to order commitments.
ATP Versus On-Hand Inventory
On-hand inventory shows the quantity recorded in stock, whereas ATP estimates the quantity that can be committed to additional demand under the applicable planning rules. The distinction matters because stock may already be allocated to another customer, reserved for production, or restricted by warehouse and inventory controls.
An Available To Promise Check evaluates whether sufficient eligible supply exists for a requested quantity and date. If supply is insufficient, the sales team can review a later delivery date, an alternative warehouse, a replenishment plan, or a partial shipment. These options allow the business to coordinate customer expectations with actual supply conditions.
An Available To Promise System supports this process by connecting inventory information and demand commitments to order promising decisions. Its value depends on timely transaction updates and consistent inventory, purchasing, and production records.
Business Benefits and Best Practices
Reliable ATP information supports order fulfillment, production scheduling, and purchasing decisions. Sales representatives can provide more realistic delivery dates, planners can identify upcoming shortages, and purchasing teams can prioritize replenishment according to customer demand.
To maintain useful ATP information, businesses should update sales orders promptly, monitor purchase order due dates, review production schedules, and reconcile inventory movements. Teams should also confirm that warehouse restrictions, quality holds, and allocation rules are reflected in the available quantity used for promising orders.
For manufacturers using epicor, effective ERP integration helps connect sales commitments with inventory, purchasing, and production records. This provides a consistent basis for coordinating operational workflows and making informed decisions about order fulfillment and working capital.
Extending ERP Workflows with AI
The Hyperbots Platform supports company-specific ERP integration, workflows, roles, and general ledger structures through no-code configuration. Its Process Specific Capabilities enable AI automation tailored to individual business processes, while Ready to Deploy Capabilities provide pre-trained agents and ERP connectors for relevant finance workflows.
With Self Learning Capabilities, Hyperbots co-pilots can learn from human actions and refine workflow decisions over time. A Human in the Loop approach allows exceptions to be reviewed and routed through appropriate approval processes. These capabilities can complement ERP-based operations by helping finance teams coordinate transaction processing and maintain consistent records across connected workflows.
For example, after an order is fulfilled, finance teams may need to match customer payments with invoices, interpret remittance advice, resolve deductions, and post receipts. How Hyperbots AI Agents 10x Epicor Finance Operations discusses AI-supported finance workflows that extend Epicor capabilities, including cash application and receipt processing. Closing Epicor Finance Gaps with Hyperbots AI Agents also covers connected workflows for payment matching, exception handling, and ERP posting. These downstream processes help align customer transactions with financial records.
Summary
Epicor Available to Promise helps businesses estimate the inventory they can commit to new orders based on eligible stock, existing demand, and expected supply. By considering both quantity and timing, ATP supports realistic delivery commitments, better replenishment planning, and coordinated production schedules. Maintaining accurate ERP records and reviewing supply changes regularly helps businesses improve fulfillment decisions and operational efficiency.