Cannot create ticket using rest api!

[HW-Siew]

I created an admin user who will be able to create a ticket using admin panel. But when i try to user the username:password in authorization of that user, i always get this error message. What exactly goes wrong here. Appreciate your advice.

endpoint used : https://dev.actiweb.site/wp-json/wpas-api/v1/tickets
method post

{
"code": "rest_cannot_create",
"message": "Sorry, you are not allowed to create tickets as this user.",
"data": {
"status": 401
}
}

[reyhanehpahlevan]

You should add some capabilities to your user's role, for example, if you want to allow 'customer' to see, create and update tickets you should add the following codes in your 'functions.php' file or your plugin:

function add_plugin_caps() {
$role = get_role( 'customer' );

$role->add_cap( 'view_ticket' ,true); 
$role->add_cap( 'create_ticket',true ); 
$role->add_cap( 'close_ticket',true ); 
$role->add_cap( 'reply_ticket',true ); 
$role->add_cap( 'attach_files',true ); 

}
add_action( 'init', 'add_plugin_caps',11);