approved supplier list

An approved supplier list is a controlled register of external providers that an organization has evaluated and formally authorized to supply specific goods or services. It is typically maintained by quality, supply chain, or procurement functions and is used to control who can be used for production materials, components, special processes, and services that affect product quality, safety, or regulatory compliance.

The list usually contains information such as supplier name, scope of approval (what they are allowed to supply), applicable standards or regulatory constraints, risk or criticality level, and the status of their approval. It is often held in an ERP, QMS, or supplier management system with defined workflows for adding, changing, suspending, or removing suppliers.

Operational use in manufacturing and regulated environments

In industrial and regulated manufacturing, the approved supplier list commonly supports:

• Purchasing controls: Buyers and planners are required to source only from suppliers on the list for defined materials, processes, or services.
• Risk-based supplier management: Critical or high-risk suppliers can be flagged for tighter incoming inspection, audits, or additional verification.
• Traceability: Linking purchase orders, lots, and work orders back to specific approved suppliers to support quality investigations, recalls, or regulatory inquiries.
• Change control: Any change to supplier status (for example approval, suspension, disqualification) is documented and communicated to affected functions.
• Compliance with standards: Many quality management standards, such as aerospace and medical device standards, expect documented criteria and records for supplier selection, approval, and periodic re-evaluation.

In aerospace, the approved supplier list is a key element of counterfeit parts prevention and special process control. Only vetted suppliers with verified traceability and process qualifications are authorized for critical materials, hardware, electronics, or outsourced processing.

What an approved supplier list includes and excludes

An approved supplier list typically includes:

• Suppliers of production materials, components, and assemblies
• Providers of special processes (such as heat treat, coating, NDT, calibration, testing, or machining services)
• Logistics or service providers when their performance can affect product quality, safety, or compliance

It typically does not include:

• Low-risk indirect or office suppliers (such as basic office supplies), unless organization policy requires it
• Internal departments or sister facilities, which are controlled through internal process controls rather than supplier approval

Common confusion

• Approved supplier list vs. supplier master file: The supplier master file in ERP may list all vendors that exist in the system for any purpose. The approved supplier list is the subset that has been evaluated and authorized for defined products or services, usually with quality and risk criteria.
• Approved supplier list vs. preferred supplier list: A preferred supplier list may highlight suppliers that are favored for commercial or strategic reasons. An approved supplier list is focused on authorization for use, based on qualification and compliance. A supplier can be approved but not preferred, or preferred but restricted to certain scopes of supply.

Link to counterfeit parts prevention and AS9100-type controls

In standards such as AS9100, the approved supplier list is part of the documented system to control external providers, prevent counterfeit or suspect parts from entering the supply chain, and maintain traceability. Organizations typically:

• Define criteria for supplier approval, including checks on authenticity and traceability of parts or materials
• Document initial evaluation, ongoing monitoring, and re-approval based on performance data and audits
• Integrate the list with purchasing workflows so that orders for critical or high-risk items can only be placed with approved sources

Used in this way, the approved supplier list serves as a central control point connecting supplier risk assessment, purchasing, inspection, and nonconformance management processes.