The data of completed notifications and orders is of great importance for the effective planning of future maintenance activities, and for a meaningful analysis of past problems, malfunctions and activities.

This data is stored on a long-term basis in the maintenance history, where it is available for evaluations.

The following options are available to you in the R/3 System for evaluating maintenance data:

• You can evaluate notifications separately (see below, and PM - Maintenance History for historical notifications).

• You can evaluate orders separately (see PM - Maintenance Orders).

• You can perform a comprehensive evaluation of maintenance processes using key figures (see Logistics Information System).

The analysis of past maintenance activities, especially those prompted by a malfunction, is of great importance for the smooth processing of business operations. Only in this way can weak points be recognized and the appropriate measures taken to avoid the same or similar malfunctions reoccurring.

If the analysis of malfunction reports reveals that among the same objects, those that were manufactured in a particular year break down the most frequently, then you should consider exchanging those objects specifically.

If the analysis of the malfunction reports reveals, for example, that the gaskets always become porous after a particular period of operation, then you should ensure that these gaskets are always replaced shortly before the end of this time period as a preventive measure.
You should perform evaluations of this sort using the Plant Maintenance Information System. There, you can obtain meaningful results with little effort, as all the important key figures are already defined.

Historical notifications can actively support you as a maintenance planner during the processing and planning of new notifications, as they can help you to answer the following questions:

• Has a similar malfunction occurred before?
• Has a similar request been made before?
• How was the maintenance notification processed in the corresponding order at that time? What maintenance task lists and work centers were used? How long did it take to process? What were the ensuing costs?

If there has already been a similar malfunction report or maintenance request in the past, then you can use the notification that was created at that time as the basis for planning the new notification.

2. Select the field completed in the first line of the selection criteria. Enter all further relevant criteria and start the evaluation.