Challenges in practice

Customer complaints are more than just individual grievances—they are potential triggers for loss of trust, high follow-up costs, and damage to your image. Nevertheless, many companies lack a consistent, robust process for handling them.

Complaints are processed in an uncoordinated manner via emails, Excel lists, or isolated solutions. Decisions drag on, responsibilities are unclear, and the customer waits for feedback. At the same time, internal discussions about whether a complaint is justified escalate – often without a reliable factual basis.

The situation becomes particularly critical when problems arise in the field: field returns, service calls, and on-site analyses generate high costs but often only provide fragmented insights. Causes remain unclear, and errors are only considered locally rather than analyzed along the entire error chain. The result: complaints are either accepted prematurely or recognized too late – while similar errors continue to spread unnoticed in the field.

Added to this is a lack of transparency regarding complaint, service, and field costs. Economic impacts are difficult to assess, systematic improvements fail to materialize, and valuable insights are lost in individual processes.

Find out more

Solution QS1

QS1 creates structure, transparency, and decision-making certainty in the customer complaint process—from the initial notification to sustainable error prevention.

Customer complaints, field analyses, and field returns are recorded centrally and processed in a controlled manner. Standard-compliant reports such as 8D or xD reports, clear workflows, and defined responsibilities ensure fast response times and consistent communication with the customer.

A central element is fault chain analysis: QS1 reveals causes throughout the entire product life cycle and enables a fact-based assessment of whether a complaint is justified. By comparing complete fault chains, recurring patterns can be recognized and potential further field errors identified at an early stage – before they lead to new complaints or recalls.

ERP and controlling integrations create transparency regarding complaint, service, and field costs. Insights from customer complaints are automatically fed back into FMEAs and form the basis for sustainable quality improvement.


QS1 transforms customer complaints from a risk into a controlled opportunity to strengthen quality and trust.

  • Structured complaint recording process for customer complaints and service cases
  • Centralized processing of customer complaints and returns from the field across all products and plants
  • Standard-compliant reports such as 8D/xD reports for professional customer communication
  • Workflow-based control of root cause analysis, measures, and effectiveness testing
  • Root cause analysis with Ishikawa, 5-Why, and AI support
  • Error chain analysis via the batch network to identify similar cases and potential field returns
  • Analysis of dependencies and causes across the entire value chain – from supplier to customer
  • Automatic feedback of customer deviations into internal processes and FMEA
  • Transparent recording of complaint, service, warranty, and return costs
  • Passing on customer costs to internal departments or suppliers
  • Complete history of all customer complaints, including communication and documents
  • Complaint metrics such as throughput times, ppm values, and repeat errors

Does this sound familiar?

  • Customer complaints are crucial touchstones, but there is no consistent internal process: cases are handled via email, Excel, or isolated solutions, responsibilities are unclear, and customers wait for reliable feedback.
  • Decisions become gut feelings: Without a central database, discussions about whether a complaint is justified escalate, while response times and escalation levels get out of hand.
  • Field problems generate a lot of effort but little insight: Returns, service calls, and on-site analyses provide fragmented information, the chain of errors is not analyzed across the entire life cycle, and recurring errors go unnoticed.
  • A potential field risk is recognized too late as a pattern: Similar cases are not identified early on, making expensive series problems, recalls, or damage to the
  • Complaint, service, and warranty costs remain opaque: Economic impacts are difficult to assess, recourse potential is not consistently exploited, and systematic improvements peter out in individual cases.

This should be achieved through a robust process

  • Centralized, standards-compliant end-to-end process: Recording => Analysis => Immediate measures/decision => Customer communication (8D/xD) => CAPA => Effectiveness testing => Prevention, with a complete history.
  • Fact-based evaluation instead of discussion: complete data chain from order/delivery note to serial number/batch, including documents, images, test and service information.
  • Error chain analysis as an early warning system: connections in the batch and serial number network must be visible in order to identify patterns and potential further field errors at an early stage.
  • Deadline and escalation security: Response times, escalation levels, and responsibilities must be controlled based on workflows and monitored in real time.
  • Transparent cost logic: Complaint, service, warranty, and goodwill costs must be recorded, evaluated, and controllable on a case-by-case basis, including passing on costs to internal departments or suppliers.

Coverage in QS1

  • Centralizes customer complaints, service cases, and field returns and manages them in a workflow-supported manner from initial notification to completion, including clear responsibilities, status monitoring, and deadline tracking.
  • Creates standards-compliant 8D or xD reports from the recorded data and ensures fast, traceable, and consistent communication with the customer.
  • Methodically analyzes causes using 8D logic, Ishikawa, 5-Why, and optional AI support so that root cause analysis does not become a free-text exercise and evidence of effectiveness is reliable.
  • Makes error chains in batch and serial number networks transparent, identifies similar cases and potential further field returns at an early stage, and thus reduces recall and series risks.
  • Integrates ERP and controlling for commercial clarity: Complaint, service, and warranty costs become transparent, recourse potential can be exploited, and findings automatically flow back into internal processes and FMEAs.

The result: Kürzere Reklamationsdurchlaufzeiten, faktenbasierte Entscheidungen statt Bauchgefühl, frühzeitiges Erkennen von Feldrisiken durch Fehlerkettenanalyse, professionelle Kundenkommunikation via 8D/xD, vollständige audit- und revisionssichere Historie sowie transparente Reklamations- und Feldkosten als Grundlage für nachhaltige Qualitätsverbesserung.

CONTACT US NOW

Your advantages

  • Structured and professional handling of customer complaints and field returns
  • Early detection of similar error cases through error chain analysis – before further complaints arise
  • Preventive identification of potential field returns along the entire value chain
  • Fast, traceable communication with customers
  • Greater transparency regarding status, measures, and responsibilities
  • Sustainable elimination of causes instead of short-term error corrections
  • Reduced complaint processing times and less coordination effort
  • Transparency regarding warranty, service, and return costs
  • Improved customer satisfaction and long-term customer loyalty
  • Audit-proof documentation for customers and auditors