any change in this information. Article 20 1. Subsequent verification of certificates of origin or export licences shall be carried out at random, or whenever the competent Community authorities have reasonable doubt as to the authenticity of the certificate or licence or as to the accuracy of the information regarding the products in question. 2. In such cases the competent authorities in the Community shall return the certificate of origin or export licence or a copy thereof to the competent governmental authority in Macao giving, where appropriate, the reasons of form or substance for an inquiry. If the invoice has been submitted, such invoice or a copy thereof shall be attached to the certificate or licence or its copy. The authorities shall also forward any information that has been obtained suggesting that the particulars given on the said certificate or licence are inaccurate. 3. The provisions of paragraph 1 above shall be applicable to subsequent verifications of the declarations of origin referred to in Article 2 of this Protocol. 4. The results of the subsequent verifications carried out in accordance with paragraphs 1 and 2 above shall be communicated to the competent authorities of the Community within three months at the latest. The information communicated shall indicate whether the disputed certificate or licence or declaration applies to the goods actually exported and whether these goods are eligible for export in accordance with the arrangements established by this Agreement. The information shall also include, at the request of the Community, copies of all documentation necessary to determine the facts fully and in particular the true origin of the goods. Should such verifications reveal systematic irregularities in the use of declarations of origin, the Community may subject imports of the products in question to the provisions of Article 2 (1) of this Protocol. 5. For the purpose of subsequent verification of certificates of origin, copies of the certificates as well as any export documents referring to them shall be kept for at least a period of three years by the competent governmental authority in Macao. 6. Recourse to the random verification procedure specified in this Article must not constitute an obstacle to the release for home use of the products in question. Article 21 1. Where the verification procedure referred to in Article 20 or where information available to the Community or to Macao indicates or appears to indicate that the provisions of this Agreement are being contravened, both parties shall cooperate closely and with the appropriate urgency to prevent such contravention. 2. To this end, Macao shall, on its own initiative or at the request of the Community, carry out appropriate inquiries or arrange for such inquiries to be carried out concerning operations which are or appear to the Community to be in contravention of this Agreement. Macao shall communicate the results of these inquiries to the Community together with any other pertinent information enabling the true origin of the goods to be determined. 3. By agreement between the Community and Macao officials designated by the Community may be present at the inquiries referred to in paragraph 2. 4. Pursuant to the cooperation referred to in paragraph 1, Macao and the Community shall exchange any information considered by either partner to be of use in preventing the contravention of the provisions of this Agreement. Such information may include information on trade in products subject to this Agreement between Macao and other countries and information on production of such products in Macao. 5. Where it is established that the provisions of this Agreement have been contravened, Macao and the Community may agree to take such measures as are necessary to prevent a recurrence of such contravention. >PIC FILE= "T0036596"> >PIC FILE= "T0036597"> PROTOCOL B Under Article 7 (6) of the Agreement, a quantitative limit may be fixed on a regional basis where imports of a given product into any region of the Community in relation to the amounts determined in accordance with paragraph 2 of the said Article 7 exceed the following regional percentage: >PIC FILE= "T0036598"> PROTOCOL C The annual growth rate for the quantitative limits introduced under Article 7 of the Agreement shall be determined as follows: For products in categories falling within Group I, II and III, the growth rate shall be fixed by agreement between the parties in accordance with the consultation procedure established in Article 16 (1) of the Agreement. Such growth rate may in no case be lower than the highest rate applied to corresponding products under bilateral agreements concluded under the Geneva Arrangement between the Community and other third countries having a level of trade equal to or comparable with that of Macao. ANNEX I Certain changes have been made in the composition of the textile groups referred to in the Agreement. To facilitate reference to the new groupings, their composition is set out below: >PIC FILE= "T0036570"> Note: Category 10 comprises former categories 10 and 11. Category 24 comprises former categories 24 and 25. Category 19 comprises former categories 19 and 89. Category 72 comprises former categories 72 and 79.