corrigendum tender for item 1 , item 2 , item 3 , item 4 , item 5 , item 6 , item 7 , item 8 , item 9 , item 10 , item 11 , item 12 , item 13 , item 14 , item 15 , item 16 , item 17 , item 18 , item 19 , item 20 , item 21 , item 22, supply replacement and installation of ups systems and battery banks, item1_ups_with_battery_bank_415vac_60kva, item2_ups_with_battery_bank_240vac_30kva, item3_ups_with_battery_bank_240vac_35 kva, item4__ups_with_battery_bank_110vac_50kva, item5__ups_with_battery_bank_240vac_14kva, item6_ups_with_battery_bank_110vac_56kva, item7_two_battery_bank_with_buy_back_43ah, item8_two_battery_bank_with_buy_back_45ah, item9_ups_240vac_60kva, item10_ups_110vac_75kva, item11_ups_240vac_50kva, item12_ups_240vac_20kva, item13_ups_110vac_30kva, item14_ups_110vac_40kva, item15_ups_415vac_100kva, item16_ups_230vac_25kva, item17_ups_240vac_20kva, item18_ups_230vac_10kva, item19_ups_240vac_50kva, item20_ups_110vac_75kva, item21_ups_240vac_60kva, item22_ups_110vac_45kva