What is safe to say
Only approved workflow scope, supported filing states, and governed country-pack language belong here. For Vietnam today, public-safe filing stays at guided submission with export package.
What needs proof
Compliance claims must point to proof, source-linked docs, or release-safe operational evidence.
What stays controlled
Rule authoring, filing-mode changes, and unresolved legal-source conflicts remain off the public shell.
Current authority naming
Current public documentation uses Cục Thuế as the modern authority label. Legacy labels remain only inside cited source material when needed for fidelity.