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This article relates a case study based on the experiment of the Brazilian registration unification conception. Considering the innovative experiences of the Electronic DECA and CNPJ in the Internet information systems, the project uses the unified portal solution of electronic service transactional integrations, with an data architectonic model found in information flow concepts (Navigation Plan Architectonic Model), operated by two or more organizations working under government agreements, with the resulting situation being that, the same taxpayer of federal and state taxes adopts a CNPJ number with a unique registration identification in all organizations.

public administration; information technology; registration unification; business registration; navigation plan