The EAM system from IT-Enterprise has a separate business process for procurement management called "Procurement for work requests".
You can buy all the necessary spare parts and materials in time as your enterprise needs. The procurement system can be used both for individual jobs and central planning. It also helps to analyze the consumption stability and reliability of the material supply chain. So, you can predict the optimal time for ordering each item in the purchase requisition.
You can create purchase requisitions in terms of work orders, maintenance schedules and pre-created requests. Also, with the known start date of repair, you can order parts and materials for MRO according to their standard procurement cycle.