You are using Data Guard in conjunction with Global Database Services.

DGMGRL may be used to add the Sales configuration to the Prod pool in gds.

Performing a role change with DGMGRL automatically notifies GDS which in turn activates the appropriate services.

DGMGRL may be used to add a single database to the Sales configuration even if Sales is a member of the Prod pool.

Adding a database to the Sales configuration with DGMGRL automatically adds the database to the Prod Pool.

Adding a database to the Sales configuration with DGMGRL requires that the Sales configuration be disabled first. It must then be enabled after the new database is added to the configuration.