Use the START command to start VTAM®. You can enter start options when you start VTAM, or you can specify a start list.

1. Respond to message IEA101A during operating system IPL by entering RERP=xx, where xx represents the last two characters of the alternate ERP list name, if you want to use the resident error recovery procedures (ERP) option or the ERP option with an alternate ERP list.
2. Make available the necessary channel-attached devices using the MVS™ command VARY.
3. Use the VTAM start procedure.
4. Enter VTAM start options, if necessary.
5. Enter the logon manager START command, if necessary.