Any change in the uniform rate of VAT resources, in the correction granted to the United Kingdom referred to in Article 5 of Decision 88/376/EEC, Euratom and in its financing, in the uniform rate of the additional resource and, where appropriate, in the GNP financial contributions shall require the final adoption of a supplementary or amending budget and shall give rise to readjustments of the twelfths which have been entered since the beginning of the financial year.