Ditto but different custom truck OEM, and we used 7.
I accidentally looked into this a few months ago. For us, 7 was excessive; probably 5 would have sufficed… except for the fact that some nights 5 of them would fail, leaving only 2 to carry the load. So if we had started with 5, that would leave […calculating…] zero.
Some MRP processes fail but MRP completes… more or less - Kinetic ERP - Epicor User Help Forum
When I was on MT SaaS in 2017, we’d crash MRP if was more than one process.
Cloud Migration considerations and advice - Epicor ERP 10 - Epicor User Help Forum