## 2 Literature Review  
This Section discusses the previous research on ERP systems concerning usability evaluation methods, findings, and contributions. Many studies have reported usability evaluation studies of ERP systems. One of the most reported methods of ERP system evaluation is the usability testing method. The Dynamic Task Map with information (DTMi) [18] is an interactive interface to support ERP system tasks and is evaluated by usability testing. Additionally, many studies [3; 18; 21] assessed the ERP systems by using usability testing methods. These evaluations involved the actual users and ERP system experts in laboratory settings. The studies in [22; 23] reported the survey findings that included the questions primarily related to the ease of use of ERP systems. Likewise, experiments were conducted to compare the usability of different ERP interfaces, such as in [17], where the authors evaluated the navigation and association support interfaces in SAP. In [16], an exploratory experiment study was conducted to compare the SAP with association map interfaces. Interviews were held in the study [11], beginning with an aim to address the problem of little documentation of the usability problems faced by users while using the ERP systems. Additionally, most of the studies mentioned above had conducted the initial literature review of the previous research to identify the kinds of ERP usability problems. [PERSON] and [PERSON] [3] conducted usability studies to develop the usability evaluation criteria of ERP systems. First, a total of 20 usability problem instances (UPIs) were extracted from a collected 53 raw responses. Next, UPIs with similar primary issues were combined into ten general usability problems (UP). The limitation of the study is that the explored UP are only based on the data collected from the usability study of one ERP system and performed by the three participants, i.e., a limited number of evaluators and a limited number of systems. In [24], [PERSON] and [PERSON] proposed heuristics that are specific to ERP systems. They proposed five criteria: navigation, presentation, task support, learnability, and task support for the usability evaluation of ERP systems based on general usability heuristics and rules after studying the ERP usability issues. Then, they conducted the usability study to verify the proposed usability heuristics in identifying the potential usability problems with an ERP system. The study is limited in terms of its application with heuristic evaluation. [PERSON] [25] evaluated the usability of ERP systems by applying three methods of the cognitive walkthrough, heuristic evaluation, and user testing. There were nine usability issues found; out of these, error prevention and recognition problems had the most significant effect on the usability of ERP systems. The study was limited to only one evaluator who performed the heuristic evaluation and a cognitive walkthrough. Additionally, usability testing was conducted from a remote location that may have caused some valuable observations to be omitted. [PERSON] and [PERSON] [26] developed an end-user-based model for evaluating the usability of mobile ERP applications. They performed the usability evaluation on two ERP systems using the usability criteria of effectiveness, errors, efficiency, satisfaction, memorability, learnability, cognitive load, navigation, and presentation. The evaluation was conducted online and limited to the mobile ERP interface, and all the data were collected through questionnaires. The previous research provides good data sources related to ERP system usability problems. However, these data need to be analyzed effectively to make them easy to use for the stakeholder beneficiaries of the ERP system in designing, developing, and improving the ERP user interfaces. Furthermore, none of the previous studies considered consolidating the issues related to ERP systems as a precise reusable checklist for designing ERP systems.