ASA Database Administration Guide
  Database Options
    Alphabetical list of options

SUBSCRIBE_BY_REMOTE option [replication]

Function 

Controls interpretation of NULL or empty-string SUBSCRIBE BY values.

Allowed values 

ON, OFF

Default 

ON

Description 

When the option is set to ON, operations from remote databases on rows with a SUBSCRIBE BY value that is NULL or an empty string assume that the remote user is subscribed to the row. When it is set to OFF, the remote user is assumed not to be subscribed to the row.