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Contract Addendum

1 article

Management Aug 17, 2026 · 6 min read

Amendment vs addendum: how to change a signed contract without redoing it

Amendment vs addendum: one changes existing terms, the other adds new ones. Which you need, how renewal clauses fit, and why version history matters more.

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EU e-invoices (EN 16931, Peppol BIS 3.0)