Observe the guidelines when you change the RSSD primary user login name and password.
Never change the RSSD primary user login name and/or password while routes are being created.
While a route is being created, the destination Replication Server uses the primary user login name and password to create and materialize subscriptions at the destination site for replicated RSSD system tables.
To change an encrypted or clear text password, use alter user with the set password clause.
To change both a login name and password (encrypted or clear text), use drop user to drop the old login name and create user to create the new login name and password. Then grant the user primary subscribe permission.
Update the Replication Server configuration file with the new login name and/or password. Use rs_init if the password is encrypted.
For the updates to take effect, restart the Replication Server.
See Replication Server Reference Manual > Replication Server Commands > alter user for command syntax details.