In SAP, for any given class, multiple characteristics can be inherited from another class. For example, consider the following SAP classes:
As shown in the following image, EQ_CLASS_0001 has four unique characteristics:
As shown in the following image, Fasteners also has four sets of unique characteristics:
Bolts, however, inherits all of the characteristics from EQ_CLASS_0001 and FASTENERS. In addition, Bolts has two unique characteristics of its own: HEAD_SHAPE and BOLT_TYPE:
Finally, Hexagonal Bolt also inherits all of the characteristics from EQ_CLASS_0001, FASTENERS, and BOLTS. It also has one unique characteristic of its own: TOLERANCE:
Using these SAP classes, in GE Digital APM system, if you were to select the Extract From CMMS System check box for the HEXAGONALBOLT class, after selecting the Synchronize Characteristics link while viewing the HEXAGONALBOLT CMMS Classification record, the following CMMS Characteristic records would be created automatically:
As you can see from the Classification column, some of the characteristics are inherited from other classes:
Specifically, you can see that:
The following characteristics are inherited from the class FASTENERS:
The following characteristics are inherited from the class BOLTS:
The characteristic TOLERANCE is assigned directly to the class HEXAGONALBOLT (no highlighting).
If you selected the Extract From CMMS System check boxes for all of these characteristics, if you were to run the Equipment Characteristics Extraction Interface without filters, all of these characteristics would be extracted.
If, however, you were to filter the report to extract only characteristics belonging to the HEXAGONALBOLT class, only characteristics that are assigned directly at the HEXAGONALBOLT level would be extracted. In other words, because only TOLERANCE is assigned directly to HEXAGONALBOLT, only the TOLERANCE characteristic would be extracted.
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