WordPress at a glance
action is not described

action_scheduler/migration_batch_starting action-hook . WC 1.0

Migration a batch of actions.

Usage

add_action( 'action_scheduler/migration_batch_starting', 'action_function_name_8808' );
function action_function_name_8808( $action_ids ){
	// action...
}
$action_ids(array)
List of action IDs to migrate.

Where the hook is called

Runner::migrate_actions()
action_scheduler/migration_batch_starting
woocommerce/packages/action-scheduler/classes/migration/Runner.php 97
do_action( 'action_scheduler/migration_batch_starting', $action_ids );

Where in WP core the hook is used WooCommerce

woocommerce/packages/action-scheduler/classes/WP_CLI/Migration_Command.php 141
add_action( 'action_scheduler/migration_batch_starting', function ( $batch ) {