SAP has made the upgrade process significantly easy in past few years yet SAP is complex software and requires a lot of understanding and careful analysis of the system before undertaking an upgrade. Typically, Enterprises following challenges for a successful upgrade:
Continuity of business is a key challenge while upgrading the system
Estimation of time and efforts required for upgrade varies
Upgrades bring in a lot of changes and add-on functionalities which impacts the existing standard and custom built solution. Impact of upgrade on these processes has to be clearly understood before upgrade
Re-alignment of the roles and authorizations with the adjusted processes
Management of the impacted objects and the scope of the upgrade
Hardware resizing of the upgraded landscape
Accurate and efficient testing of the processes before going-live
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