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Run: Customer Complaint 8D Report SOP

Use this Customer Complaint 8D Report SOP to log, investigate, contain, and close customer complaints with clear ownership and verification. It helps teams m...

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Steps

The customer service representative records the complaint in the complaint log or ticketing system. Include the customer identifier, complaint date, affected product or service, lot/order/reference number, complaint description, and any supporting evidence provided by the customer.
The quality lead reviews the complaint for safety impact, regulatory risk, customer impact, and production or service disruption. Determine whether the issue requires immediate escalation to management, regulatory reporting, or cross-functional containment.
The responsible supervisor identifies all potentially affected product, service output, lots, orders, or transactions. Place affected items on hold, stop shipment or service release if necessary, notify impacted internal teams, and document the containment boundaries and actions taken.
The quality manager assigns a cross-functional team with authority and knowledge of the process, product, service, and customer requirements. Define the team leader, subject matter experts, and due dates for investigation milestones.
The 8D team writes a factual problem statement using observable data. Include the defect or failure mode, location, time frame, quantity affected, customer impact, and any known deviation from specification or expectation.
The quality lead verifies that containment actions are in place and effective. Confirm that affected inventory, transactions, or service records are isolated, and that any interim controls are preventing recurrence while the investigation continues.
The 8D team analyzes the complaint using structured root cause tools such as 5 Whys, fishbone analysis, process mapping, or data trending. Separate the immediate cause, escape point, and systemic root cause, and document the evidence supporting each conclusion.
The team defines permanent corrective actions that address the root cause and prevent recurrence. Assign owners, due dates, and required process changes. Update work instructions, training, controls, or supplier requirements as needed.
The quality manager reviews post-implementation evidence such as inspection results, complaint trends, audit findings, or process performance data. Confirm that the corrective action is effective and that no new non-conformance has been introduced.
The quality lead completes the 8D report with containment, root cause, corrective action, verification, and closure details. Communicate the resolution to the customer and internal stakeholders as appropriate, obtain final approval, and archive the record according to documented information controls.

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