Underinvestment in training during ERPII implementations is having a significant impact upon benefits realisation. There is a lack of research covering the training requirements of customer facing organisations implementing ERPII. Literature shows that training attracts the smallest proportion of the implementation budget. However, the current research highlights the critical role training plays in these systems and that pre- and post-implementation training should not be underestimated for the full benefits of the system to be realised. This paper presents nine CSFs required for ERPII implementation in customer facing organisations and outlines recommendations for tackling each. A case study was undertaken to identify resource allocation during the implementation lifecycle and training guidelines were prepared following in-depth interviews with client and supplier consultant practitioners.