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Corrective Maintenance 
You can use this business process to plan, perform, and document all the necessary maintenance tasks that crop up outside of regular maintenance. All the resources used, costs, and technical details of the maintenance task are recorded centrally and can be evaluated.
Usually this process is relevant if a major technical asset exhibits a defect and its repair must be planned. Diverse employees can report the defect to the responsible maintenance planner, who then plans and initiates how the defect will be processed further.

The following business process runs in SAP ECC:
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1. Create / process notification
An asset exhibits a defect, so an employee creates a maintenance notification.
2. Generate worklist for notifications.
The responsible maintenance planners selects the notifications received and then decides how to proceed for each notification.
3. Print notifications
If the maintenance worker does not need an order to process the task, he or she prints the notification papers. He or she then performs the task.
4. Create / process order
If it’s a cost-relevant or planning-relevant activity, then the maintenance technician creates a maintenance order from the maintenance notification.
5. Plan and schedule order
The maintenance planner assigns the work required to the responsible maintenance areas, and schedules the anticipated work times, the spare parts and production resources and tools required, the involvement of external firms, and the anticipated completion of the work in the maintenance order.
6. Perform work clearance management
If work clearance management is switched on, the order is then released before it is actually carried out.
7. Put order in process and print or download to mobile device
The maintenance planner releases the order for processing and prints the shop papers for the worker. If Mobile Asset Management is in use, the maintenance worker downloads the orders to mobile devices.
8. Post material movements
If the maintenance worker needs spare parts for the repairs, he or she gets the necessary parts from the stock. The stock manager posts the withdrawal with reference to the maintenance order. If spare parts for the maintenance order were ordered from external companies, then post the goods receipt with reference to the purchase order for the order.
9. Post external services
If an external service provider has provided services for the order, the external workers record their activities with reference to the maintenance order.
10. Confirm time
After ending the repairs, the maintenance worker confirms his or her time with reference to the order.
11. Enter technical data
The maintenance worker records the technical details of the defect that he or she repaired, such as the damage code or the cause of the defect.
12. Modify technical object structure
If you must replace assemblies in an asset, update the functional location structure.
13. Upload data from mobile device
If Mobile Asset Management is in use, the maintenance worker uploads the up-to-date data from his or her mobile device to SAP ERP.
14. Settle and complete order
The maintenance planner technically completes the maintenance order. The order settlement, which can be made manual or automatic, distributes the costs that accrued for the order to the defined settlement receiver. Then you can do a business completion of the order.
15. Archive maintenance documents
You can remove maintenance orders and notifications that are no longer needed in the system and archive them.
16. Perform evaluations in plant maintenance information system (PMIS)
You can analyze the recorded data in the plant maintenance and information system, for reporting and planning purposes.