After a systematic and thorough completion of the previous project phases, the ERP system can be put into live (productive) operation based on a joint decision with the client, to achieve the goal that was defined with the client at the beginning of the project. Of course, since in most cases a new, previously unknown system is being implemented, there may be minor operational problems, the elimination of which is in the best interest of both parties. To this end, we do not abandon our clients after the go-live and provide support to users until the first VAT return, which is the first important milestone of the system’s lifecycle. This, strictly speaking, is still part of the implementation project. After the successful completion of this last phase, the project is considered completed and can be transferred to the support phase.