multiple entries for synchronous_standby_names - Mailing list pgsql-general

Trying to achieve sync streaming to barman server and i need to add an entry to postgresql.conf for this parameter, which already has an entry and tried a few variations but does not work. Any ideas? Also tried '&&' but in vain

synchronous_standby_names='ANY 1 (*)',barman-wal-archive

log excerpt:

2022-06-10 16:50:54.272 BST [11241-43] @ app= LOG: syntax error in file "/var/lib/pgsql/13/data/postgresql.conf" line 22, near token "," 2022-06-10 16:50:54.272 BST [11241-44] @ app= LOG: configuration file "/var/lib/pgsql/13/data/postgresql.conf" contains errors; no changes were applied