Dataguard synchronization

Hi Oracle gurus,

While verifying the data guard on the primary and standby database, I found the primary database is not synchronized with the standby database.

Kindly find the details below and request to suggest on how to synchronize both the databases.

On Primary database

SQL> select sysdate,protection_mode, synchronized, synchronization_status from v$archive_dest_status where type='PHYSICAL' and synchronization_status !='OK';

SYSDATE    PROTECTION_MODE                   SYNCHRONIZED          SYNCHRONIZATION_STATUS

---------- ----------------------      ------------------------- --------------------------------------

17-JUL-21   MAXIMUM PERFORMANCE                     NO                    CHECK CONFIGURATION

On Standby database

SQL> select sysdate,protection_mode, synchronized, synchronization_status from v$archive_dest_status where type='PHYSICAL' and synchronization_status !='OK';