{"$schema":"https://json-schema.org/draft/2020-12/schema","type":"object","description":"Amendment between two enterprises to a signed contract (Belgium): the original contract, the changes (former and new wording), added and deleted clauses, the effective date and the signatures. A consumer amendment follows Book VI and is out of scope. The effect date, the 'other provisions' sentence and the number of originals are the parties' answers: nothing is defaulted.","additionalProperties":false,"required":["party_a","party_b","original","amendment","changes","signatures"],"properties":{"party_a":{"type":"object","additionalProperties":false,"description":"First party (company block, IBAN optional).","required":["name","enterprise_number","address","postal_code","commune","represented_by_name","represented_by_title"],"properties":{"name":{"type":"string","description":"Name or company name of the enterprise."},"legal_form":{"type":"string","description":"Legal form (for example SRL, SA, BV), as the enterprise writes it; a sole trader leaves it blank."},"enterprise_number":{"type":"string","pattern":"^[01][0-9]{3}\\.[0-9]{3}\\.[0-9]{3}$","description":"Belgian enterprise number (KBO/BCE), written 0123.456.789."},"vat_number":{"type":"string","pattern":"^BE[01][0-9]{9}$","description":"Belgian VAT number, written BE0123456789 (leave out if the enterprise has none)."},"address":{"type":"string","description":"Street and number of the registered office or domicile (Code of economic law art. III.25, al. 2)."},"postal_code":{"type":"string","description":"Postal code."},"commune":{"type":"string","description":"Municipality."},"rpm_court":{"type":"string","description":"Seat of the enterprise court named after the words RPM / RPR (legal persons only; CSA art. 2:20, 5°)."},"email":{"type":"string","description":"E-mail address."},"website":{"type":"string","description":"Website."},"phone":{"type":"string","description":"Telephone number."},"iban":{"type":"string","description":"IBAN of a payment account the enterprise holds (Code of economic law art. III.25, al. 2)."},"bic":{"type":"string","description":"BIC of that account."},"in_liquidation":{"type":"boolean","description":"true when the legal person is in liquidation (CSA art. 2:20, 7°); printed only when true."},"represented_by_name":{"type":"string","description":"Name of the person who represents the enterprise."},"represented_by_title":{"type":"string","description":"Capacity of that person (for example gérant, administrateur délégué)."}}},"party_b":{"type":"object","additionalProperties":false,"description":"Second party (company block, IBAN optional).","required":["name","enterprise_number","address","postal_code","commune","represented_by_name","represented_by_title"],"properties":{"name":{"type":"string","description":"Name or company name of the enterprise."},"legal_form":{"type":"string","description":"Legal form (for example SRL, SA, BV), as the enterprise writes it; a sole trader leaves it blank."},"enterprise_number":{"type":"string","pattern":"^[01][0-9]{3}\\.[0-9]{3}\\.[0-9]{3}$","description":"Belgian enterprise number (KBO/BCE), written 0123.456.789."},"vat_number":{"type":"string","pattern":"^BE[01][0-9]{9}$","description":"Belgian VAT number, written BE0123456789 (leave out if the enterprise has none)."},"address":{"type":"string","description":"Street and number of the registered office or domicile (Code of economic law art. 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