diff --git a/changelogs/unreleased/8665-aj-2000 b/changelogs/unreleased/8665-aj-2000
new file mode 100644
index 000000000..2c37bc7fe
--- /dev/null
+++ b/changelogs/unreleased/8665-aj-2000
@@ -0,0 +1 @@
+Fixes issue #8214, validate `--from-schedule` flag in create backup command to prevent empty or whitespace-only values.
diff --git a/pkg/cmd/cli/backup/create.go b/pkg/cmd/cli/backup/create.go
index 03fb74938..31564aae8 100644
--- a/pkg/cmd/cli/backup/create.go
+++ b/pkg/cmd/cli/backup/create.go
@@ -179,6 +179,11 @@ func (o *CreateOptions) Validate(c *cobra.Command, args []string, f client.Facto
 		return fmt.Errorf("either a 'selector' or an 'or-selector' can be specified, but not both")
 	}
 
+	// Ensure if FromSchedule is set, it has a non-empty value
+	if err := o.validateFromScheduleFlag(c); err != nil {
+		return err
+	}
+
 	// Ensure that unless FromSchedule is set, args contains a backup name
 	if o.FromSchedule == "" && len(args) != 1 {
 		return fmt.Errorf("a backup name is required, unless you are creating based on a schedule")
@@ -215,6 +220,17 @@ func (o *CreateOptions) Validate(c *cobra.Command, args []string, f client.Facto
 	return nil
 }
 
+func (o *CreateOptions) validateFromScheduleFlag(c *cobra.Command) error {
+	trimmed := strings.TrimSpace(o.FromSchedule)
+	if c.Flags().Changed("from-schedule") && trimmed == "" {
+		return fmt.Errorf("flag must have a non-empty value: --from-schedule")
+	}
+
+	// Assign the trimmed value back
+	o.FromSchedule = trimmed
+	return nil
+}
+
 func (o *CreateOptions) Complete(args []string, f client.Factory) error {
 	// If an explicit name is specified, use that name
 	if len(args) > 0 {
diff --git a/pkg/cmd/cli/backup/create_test.go b/pkg/cmd/cli/backup/create_test.go
index b9be38e1e..1615c6eef 100644
--- a/pkg/cmd/cli/backup/create_test.go
+++ b/pkg/cmd/cli/backup/create_test.go
@@ -24,6 +24,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/spf13/cobra"
 	flag "github.com/spf13/pflag"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/mock"
@@ -86,6 +87,42 @@ func TestCreateOptions_BuildBackup(t *testing.T) {
 	}, backup.Spec.OrderedResources)
 }
 
+func TestCreateOptions_ValidateFromScheduleFlag(t *testing.T) {
+	cmd := &cobra.Command{}
+	o := NewCreateOptions()
+	o.BindFromSchedule(cmd.Flags())
+
+	t.Run("from-schedule with empty or no value", func(t *testing.T) {
+		cmd.Flags().Set("from-schedule", "")
+		err := o.validateFromScheduleFlag(cmd)
+		require.True(t, cmd.Flags().Changed("from-schedule"))
+		require.Error(t, err)
+		require.Equal(t, "flag must have a non-empty value: --from-schedule", err.Error())
+	})
+
+	t.Run("from-schedule with spaces only", func(t *testing.T) {
+		cmd.Flags().Set("from-schedule", " ")
+		err := o.validateFromScheduleFlag(cmd)
+		require.True(t, cmd.Flags().Changed("from-schedule"))
+		require.Error(t, err)
+		require.Equal(t, "flag must have a non-empty value: --from-schedule", err.Error())
+	})
+
+	t.Run("from-schedule with valid value", func(t *testing.T) {
+		cmd.Flags().Set("from-schedule", "daily")
+		err := o.validateFromScheduleFlag(cmd)
+		require.NoError(t, err)
+		require.Equal(t, "daily", o.FromSchedule)
+	})
+
+	t.Run("from-schedule with leading and trailing spaces", func(t *testing.T) {
+		cmd.Flags().Set("from-schedule", " daily ")
+		err := o.validateFromScheduleFlag(cmd)
+		require.NoError(t, err)
+		require.Equal(t, "daily", o.FromSchedule)
+	})
+}
+
 func TestCreateOptions_BuildBackupFromSchedule(t *testing.T) {
 	o := NewCreateOptions()
 	o.FromSchedule = "test"