The BEGIN CONFIG command begins the configuration session. Use subsequent Config commands to create a new configuration map or a new contiguous map that includes fewer than all AMPs in the system. At the end of the Config session, use the END CONFIG command to save your changes to disk, before you run the Reconfiguration Utility (reconfig) to put your changes into effect.
You must use the BEGIN CONFIG command to start your Config session.
If you type the BEGIN CONFIG command when a configuration session is in progress, the utility prompts whether to end the configuration session that is in progress:
The previous BEGIN CONFIG has not been ended. Do you want to abort it? -- Answer Y(es) or N(o):
When a configuration session ends prematurely, the new configuration map is not updated, and all changes are lost.