4C Certification · Procedure of Complaints and Appeals

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Procedure of Complaints and Appeals

4C Units, 4C Certification Bodies and other parties have the right to lodge complaints and appeals when feeling discontent with services or situation in the context of certification, or disagreeing with a decision made by any of the party involved.

Formal complaints and appeals on certification matters can be filed by filling in the official Complaint and Appeal form or as a letter or e-mail. It should include a clear description of the nature of the claim, justification of the claims and supporting evidence.

Please send your complaint in written form to the 4C Services GmbH office at:

Hohenzollernring 72, 50672 Köln, Germany

or to


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