Editing Systems 
Use
Once you have created a system, and irrespective of the method used, you may need to edit it through the System Landscape Editor. To edit a system is to assign values to its properties, especially the specific properties that enable connection to an external application.
Features
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· The portal installs with various PARfiles, among them a JDBC PAR file and an SAP PAR file, which correspond to connectors of the same name, and on which you base systems for connection to their respective databases.
¡ Once the properties are stored in the Portal Content Directory (PCD), they serve as a definition of the system and the connector to which they relate.
¡ Certain properties in these files are mandatory and common to both templates.
¡ Other properties are dependent upon the particular application to which you are connecting.
· To enable connectivity to a particular application, the property values and attributes of the system through which you are connecting must have values corresponding to a description of that application.
¡ Some property values are mandatory and cannot be changed.
¡ Other properties need to be configured before connectivity to the external application can be established.
¡ The two properties demanded by the System Landscape service, com.sap.portal.pcm.Title and ComponentType, are part of each template that you upload.
¡ A third property, com.sap.portal.reserved.system.ConnectionFactoryClass, is mandatory only if you are working through a connector.
¡ An additional property that may appear, com.sap.portal.reserved.system.ConnectionGroup, specifies the group of properties used or needed to connect to the system. It is an optional property that currently is relevant only for R3 systems.
· It is possible to edit properties and attributes by overriding existing values, but not to add or delete properties inherited from a PAR file or a template.
Activities
In the property list, enter values for those properties whose values are not set and which need values, using the guidelines provided for each system:
¡ Editing JDBC System Properties
¡ Editing SAP System Properties
¡ Editing HTTP System Properties
¡ Editing Web Service System Properties
¡ Editing BI JDBC System Properties
¡ Editing BI ODBO System Properties
¡ Editing BI SAP Query System Properties
¡ Editing BI XMLA System Properties
· Editing property attributes:
a. In the Property Editor, click the arrow beside any particular property to view and edit property attributes
b. Click Save to effect any changes.
· Defining user mapping (for establishing a JDBC connection); see User Mapping and System Properties for User Mapping.
· Defining a default system alias; see System Aliases.
· Testing the connection to the back-end application represented by the system; see Testing System Connections.