
Assigning Methods to MTE Classes or Individual MTEs
Use
You can assign
methods to MTE classes for data collection, analysis, and auto-reactions. The assignment is performed in the coding of the data supplier itself. If you have also created your own auto-reaction or analysis methods (see Defining, Releasing, and Transporting Methods), you can assign these methods to MTE classes.You should not change the assignment of data collection methods, as this would affect the correct execution of the data supplier. Even if you are creating your own data supplier, the assignment of the data collection methods should be performed using the data supplier and not by making changes in the Alert Monitor.

As of SAP Basis 4.6A. you can also assign
You can perform the assignment both directly in the alert monitoring tree using transaction RZ20 and in the Customizing transaction for the Alert Monitor (RZ21).
Assignment of the Method in the Alert Monitoring Tree
Assign Auto-Reaction Method to Only this MTE

The method assignment applies to the active properties variant.
Assign Auto-Reaction Method to the Selected MTE Class
Assignment of the Method in Transaction RZ21

You do not need to assign a method to every MTE class in the monitoring architecture. If you have not specified a method for an MTE class, the system uses, by default, the method assigned to the superordinate MTE.