Sustainable Enterprise Resource Planning (S-ERP) system is an integrated system enabling decision makers to integrate and manage business process within organisation in a sustainable manner. The S-ERP implementation is huge, which requires an integration of all business units in value chain. Practitioners need guidelines that show important steps to implement the S-ERP systems. A development of S-ERP guidelines has been highlighted in the previous work. However, the reliability of the steps needs to be evaluated by a number of experts. The aim of the present study is to evaluate the S-ERP guidelines using expert review methods. Twelve experts have been involved to contribute in this study through in-depth interviews. The results of the interview are recorded and transcripted for the analysis process. In this regard, a qualitative analysis technique consisting three main activities including data reduction, data display, and representing/validating conclusions is applied to get the final S-ERP guidelines. The validated S-ERP guidelines are important and beneficial for practitioners as its accuracy and reliability have been assessed by the experts. The S-ERP guidelines will assist them to effectively implement the S-ERP systems in their organisations.