1. The export licence shall conform to the model annexedto this Protocol . It must certify inter alia that the quantity However, if the competent Community authorities have notof the product in question has been set off against the been notified about the withdrawal or cancellation of thequantitative limit prescribed for the category of the product export licence until after the products have been importedin question . into the Community, the quantities involved shall be set off against the quantitative limit for the category and the quota2. Each export licence shall only cover one of the year in question .categories of products listed in Annex II of the Agreement. Itmay be used for one or more consignments of the products in Article 13question . 1. If the competent Community authorities find that Article 8 the total quantities covered by export licences issued by Czechoslovakia for a particular category in any agreement year exceed the quantitative limit established in Annex II forThe competent Community authorities must be notified that category , as may be modified by Articles 4 , 12 and 14forthwith of the withdrawal or alteration of any export of the Agreement , or any definitive or provisional limitlicence already issued . established under Article 7 or 8 of the Agreement , the said