Purpose: This study aims to examine the link between supervisor support, transfer motivation and post-training usage of enterprise resource planning (ERP) systems. The study tested the influence of supervisor support and transfer motivation on training transfer in a complex information systems environment. Second, the study tested the mediating effect of transfer motivation in the relationship between supervisor support and training transfer. Design/methodology/approach: An online survey method was used to collect data from 170 ERP system users, who had previously attended ERP system training. The descriptive analysis was conducted with SPSS version 24, while Hayes Process Macro was used to test the research model and the mediation analysis. Findings: The findings from this study showed that supervisor support and transfer motivation positively influence training transfer. The additional result also confirmed that transfer motivation mediates the relationship between supervisor support and training transfer. Research limitations/implications: The study contributes to training theory by specifically analysing the interactions among supervisor support, transfer motivation and training transfer in a complex information system environment. One of the limitations of this study is the cross-sectional design adopted; future studies could improve by using multiple sources of data collection. Practical implications The study highlights the importance of social exchanges in an ERP transfer environment. Originality/value: This paper provides a better understanding of the influences of supervisor support and transfer motivation on the transfer of hard skills in a complex environment.