Ethio Telecom has introduced a new information system solution named ERP (EnterprisernResources Planning) in 2011, following its restructuring. Therefore, the major objective ofrnthis study is to assess the implementation of Enterprise resources planning in ethio-telecomrnand to recommend possible solutions for the gap created during the implementation. As result,rnthe researcher has tested the implementation effectiveness by selecting major effectivenessrnvariables and other related concepts. This research has a descriptive nature which elaboratesrnthe existing phenomenon as it exists. The data was collected using questionnaires from arnsample population. The collected data was analyzed using mainly by computer such as SPSSrn(Statistical Package for the Social Sciences) version 20.rnFurthermore, three work units/strata have been selected since these work units are the majorrnowner of the modules in the system, accordingly 40 employees from management and 268rnfrom non-management categories were taken as a sample by using stratified random samplingrntechnique and questionnaires were distributed accordingly. Consequently, results shows thatrnthe deployed ERP system is not properly implemented and practiced on the basis of thernselected effectiveness variables; it is observed that the ERP system is not effective across therndivisions the system is implemented. In addition, problems which hinder the practice of thernsystem were identified. As a result, lack of appropriate training for all system users wasrnidentified as the most serious problem while proper support from the integrators side and lackrnappropriate customization process in relation to the companies as well as countriesrnregulatory framework were also identified as the next most serious problems. Finally, thernreporting formats as per of the user friendly nature of the system has been identified as arnmajor challenge in relation to the decision making activity and other external stakeholdersrnconsumption.rnHence, the researcher has recommended that the company should re-consider its systemrnutilization, since there are important features not yet utilized by the company even if thernlicense is fully procured from oracle by ethio-telecom. Moreover, the company should alsornrevisit whether in considering the required business requirements through customization, Irnaddition the company has to implement adequate training and development in order to equiprnboth end-users and super users so that they can easily work on the system and support eachrnother even if integrators are not there. Finally, the company should give emphasis for thernreporting formats so that any decision maker or external stakeholder can understand it easily