# Applications Management

The left panel lists the application names with two buttons on the bottom that allow you to add or remove one application.

The right panel displays and allows you to edit the configuration of one application. An application's configuration is made up of a set of attributes that are represented as attribute bars.

The Click to add a new attribute button allows you to select an attribute type from a drop-down list and specify values for the attribute. Use the Save and Reset buttons to save the new configuration or reset the configuration to original values.

Fabric Manager GUI validates the configuration before you save or remove an application, checking for duplicate names, invalid value ranges, for example a min value that is larger than the max value, and application references. An application with reference to others cannot be removed or renamed until you resolve any reference issues.

The Deploy button on the bottom-right corner deploys the applications to the master Subnet Manager in the following way:

1. Fabric Manager GUI makes a copy of current configuration file opafm.xml with a name such as opafm.xml.<timestamp>.fv.

2. Fabric Manager GUI maintains the number of backup files to 16 by removing older files.

3. Fabric Manager GUI replaces opafm.xml with the new configurations.

To see the new configurations take effect, restart and relaunch Fabric Manager GUI.

Some applications are predefined and they cannot be edited or removed. These applications are indicated with on the view only mode on the right panel.

When an opafm.xml was generated by a tool, the content will be uneditable. A message will show on the top of the editor panel to indicate that the content is read only and all Applications are shown on view only mode.