Inbound mapping requires you to update the SYSIBM.SYSLUNAMES and SYSIBM.SYSUSERNAMES tables with information for mapping users on the remote XDB Server that will be performing inbound mapping. This can be done through SQL commands in the SQL Wizard.
You must insert values into columns labeled "required" in order to use inbound mapping. All other columns can have NULL values. Other columns in SYSIBM.SYSLUNAMES are used for trusting. See the section Trusting for more information on these values.