. I’m leaning toward running without having cell phone but I've my early morning commute locked in. It might not be wise to travel on your own without any cell phone. SAP introduced ERP Central Ingredient (ECC) in 2004. This would be the predecessor to the organization's current core offering, https://www.ecom-group.com/training-events/get-certified-implementation-consultant-sap-successfactors-succession-management-thr85/