A/RES/55/268 12. 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 11 above, their respective share in the Tax Equalization Fund of the estimated staff assessment income of 8,947,905 dollars approved for the Mission for the period from 1 July 2001 to 30 June 2002; 13. 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 11 above, their respective share in the unencumbered balance of 25,990,381 dollars gross (24,826,081 dollars net) in respect of the period ending 30 June 2000, in accordance with the composition of groups set out in paragraphs 3 and 4 of General Assembly resolution 43/232 of 1 March 1989 and adjusted by the Assembly in subsequent relevant resolutions and decisions for the ad hoc apportionment of peacekeeping appropriations, the latest of which were resolution 52/230 of 31 March 1998 and decisions 54/456 to 54/458 of 23 December 1999 for the period 1998–2000, 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; 14. Decides that, for Member States that have not fulfilled their financial obligations to the Mission, their share of the unencumbered balance of 25,990,381 dollars gross (24,826,081 dollars net) in respect of the period ending 30 June 2000 shall be set off against their outstanding obligations in accordance with the scheme set out in paragraph 13 above; 15. Emphasizes that no peacekeeping mission shall be financed by borrowing funds from other active peacekeeping missions; 16. Encourages the Secretary-General to continue to take additional measures to ensure the safety and security of all personnel under the auspices of the United Nations participating in the Mission; 17. Invites voluntary contributions to the Mission in cash and in the form of services and supplies acceptable to the Secretary-General, to be administered, as appropriate, in accordance with the procedure and practices established by the General Assembly; 18. Decides to include in the provisional agenda of its fifty-sixth session the item entitled “Financing of the United Nations Mission in Bosnia and Herzegovina”. 103rd plenary meeting 14 June 2001 3