Block 15 (See Annex II, Part 1, points 8-10, 14): On line (a) of block 15, provide the name of the countries36 of dispatch, transit and destination or the codes for each country by using the ISO standard 3166 abbreviations37. On line (b), provide, where applicable, the code number of the respective competent authority for each country and on line (c) insert the name of the border crossing or port and, where applicable, the customs office code number as the point of entry to or exit from a particular country. For transit countries give the information in line (c) for points of entry and exit. If more than three transit countries are involved in a particular shipment, attach the appropriate information in an annex. Provide the intended route between points of exit and entry, including possible alternatives, also in cases of unforeseen circumstances, in an annex.