A/RES/54/273 Page 3 system at all peacekeeping missions in accordance with General Assembly resolution 52/1 A of 15 October 1997; 8. Endorses the conclusions and recommendations contained in the report of the Advisory Committee on Administrative and Budgetary Questions, 4 and requests the Secretary-General to ensure their full implementation; 9. Takes note of the report of the Office of Internal Oversight Services on the investigation into allegations of fraud in travel at the United Nations Mission in Bosnia and Herzegovina;3 10. Requests the Secretary-General to take all necessary action to ensure that the Mission is administered with a maximum of efficiency and economy; 11. Also requests the Secretary-General, in order to reduce the cost of employing General Service staff, to continue efforts to recruit local staff for the Mission against General Service posts, commensurate with the requirements of the Mission; 12. Decides to appropriate the amount of 158,707,667 dollars gross (149,375,001 dollars net) for the maintenance of the Mission for the period from 1 July 2000 to 30 June 2001, inclusive of the amount of 7,530,382 dollars gross (6,372,279 dollars net) for the support account for peacekeeping operations and the amount of 1,177,285 dollars gross (1,047,522 dollars net) for the United Nations Logis tics Base, to be apportioned, as an ad hoc arrangement, among Member States at a monthly rate of 13,225,639 dollars gross (12,447,917 dollars net) in accordance with the composition of groups set out in paragraphs 3 and 4 of General Assembly resolution 43/232 of 1 March 1989, as adjusted by the Assembly in its resolutions 44/192 B of 21 December 1989, 45/269 of 27 August 1991, 46/198 A of 20 December 1991, 47/218 A of 23 December 1992, 49/249 A of 20 July 1995, 49/249 B of 14 September 1995, 50/224 of 11 April 1996, 51/218 A to C of 18 December 1996 and 52/230 of 31 March 1998 and its decisions 48/472 A of 23 December 1993, 50/451 B of 23 December 1995 and 54/456 to 54/458 of 23 December 1999, and taking into account the scale of assessments for the year 2000, as set out in its resolutions 52/215 A of 22 December 1997 and 54/237 A of 23 December 1999, and for the year 2001,5 subject to the decision of the Security Council to extend the Mission beyond 30 June 2000; 13. Decides also that, in accordance with the provisions of its resolution 973 (X) of 15 December 1955, there shall be set off against the apportionment among Member States, as provided for in paragraph 12 above, their respective share in the Tax Equalization Fund of the estimated staff assessment income of 9,332,666 dollars approved for the Mission for the period from 1 July 2000 to 30 June 2001; 14. Decides further that, for Member States that have fulfilled their financial obligations to the Mission, there shall be set off against the apportionment, as provided for in paragraph 12 above, their respective share of the unencumbered balance of 19,642,720 dollars gross (17,805,020 dollars net) in respect of the period ending 30 June 1999; 4 A/54/841/Add.6. 5 To be adopted by the General Assembly. /...