diff --git a/cmd/index_template.go b/cmd/index_template.go
index 96b6084..363caf7 100644
--- a/cmd/index_template.go
+++ b/cmd/index_template.go
@@ -20,6 +20,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"slices"
 
 	"codeberg.org/scip/esctl/pkg/cfg"
 	"codeberg.org/scip/esctl/pkg/es"
@@ -170,6 +171,10 @@ https://www.elastic.co/docs/reference/elasticsearch/index-settings
 				return fmt.Errorf("no name specified")
 			}
 
+			if !slices.Contains([]string{"standard", "timeseries", "logsdb", "lookup"}, conf.Mode) {
+				return errors.New("mode must be one of: standard, timeseries, logsdb or lookup")
+			}
+
 			mappings := args.Slice()[1:]
 
 			if modify {
diff --git a/pkg/es/index_template.go b/pkg/es/index_template.go
index cd6e187..f25b471 100644
--- a/pkg/es/index_template.go
+++ b/pkg/es/index_template.go
@@ -22,7 +22,6 @@ import (
 	"errors"
 	"fmt"
 	"log/slog"
-	"slices"
 	"strconv"
 	"strings"
 
@@ -185,34 +184,13 @@ func IndexTemplateCreate(conf *cfg.Config, name string, mappings []string) error
 	}
 
 	if conf.Mode != "" {
-		if !slices.Contains([]string{"standard", "timeseries", "logsdb", "lookup"}, conf.Mode) {
-			return errors.New("mode must be one of: standard, timeseries, logsdb or lookup")
-		}
-
 		settings = settings.Mode(conf.Mode)
 	}
 
 	if len(mappings) > 0 {
-		typemaps := esdsl.NewTypeMapping()
-
-		for _, mapping := range mappings {
-			parts := strings.Split(mapping, ":")
-			if len(parts) != 2 {
-				return fmt.Errorf(
-					"invalid mapping %s, expect <name:type> (type: integer, text, date, keyword)",
-					mapping)
-			}
-
-			switch parts[1] {
-			case "text":
-				typemaps.AddProperty(parts[0], esdsl.NewTextProperty())
-			case "integer":
-				typemaps.AddProperty(parts[0], esdsl.NewIntegerNumberProperty())
-			case "date":
-				typemaps.AddProperty(parts[0], esdsl.NewDateProperty())
-			case "keyword":
-				typemaps.AddProperty(parts[0], esdsl.NewKeywordProperty())
-			}
+		typemaps, err := modMappings(mappings)
+		if err != nil {
+			return err
 		}
 
 		maps.Mappings(typemaps)
@@ -227,40 +205,18 @@ func IndexTemplateCreate(conf *cfg.Config, name string, mappings []string) error
 	}
 
 	if len(conf.Meta) > 0 {
-		metadata := map[string]json.RawMessage{}
-
-		for _, meta := range conf.Meta {
-			parts := strings.Split(meta, ":")
-			if len(parts) != 2 {
-				return errors.New("meta data must be in the form key:value")
-			}
-
-			msg, err := json.Marshal(parts[1])
-			if err != nil {
-				return fmt.Errorf("failed to json marshal metadata %s: %w", meta, err)
-			}
-
-			metadata[parts[0]] = msg
+		metadata, err := modMeta(conf, nil)
+		if err != nil {
+			return err
 		}
 
 		create.Meta_(esdsl.NewMetadata(metadata))
 	}
 
 	if len(conf.Settings) > 0 {
-		usersettings := map[string]json.RawMessage{}
-
-		for _, meta := range conf.Settings {
-			parts := strings.Split(meta, ":")
-			if len(parts) != 2 {
-				return errors.New("settings data must be in the form key:value")
-			}
-
-			msg, err := json.Marshal(parts[1])
-			if err != nil {
-				return fmt.Errorf("failed to json marshal metadata %s: %w", meta, err)
-			}
-
-			usersettings[parts[0]] = msg
+		usersettings, err := modSettings(conf)
+		if err != nil {
+			return err
 		}
 
 		settings = settings.IndexSettings(usersettings)
@@ -315,15 +271,10 @@ func IndexTemplateModify(conf *cfg.Config, name string, mappings []string) error
 	maps.Mappings(tpl.IndexTemplate.Template.Mappings)
 	maps.Aliases(tpl.IndexTemplate.Template.Aliases)
 
-	// pre fill meta, if any
-	metadata := map[string]json.RawMessage{}
-	for key, value := range tpl.IndexTemplate.Meta_ {
-		metadata[key] = value
-	}
-
 	// pre fill components
 	modify.ComposedOf(tpl.IndexTemplate.ComposedOf...)
 
+	// pre fill data stream config
 	if conf.Stream {
 		modify.DataStream(esdsl.NewDataStreamVisibility())
 
@@ -338,34 +289,13 @@ func IndexTemplateModify(conf *cfg.Config, name string, mappings []string) error
 	modify.AllowAutoCreate(conf.AutoCreate)
 
 	if conf.Mode != "" {
-		if !slices.Contains([]string{"standard", "timeseries", "logsdb", "lookup"}, conf.Mode) {
-			return errors.New("mode must be one of: standard, timeseries, logsdb or lookup")
-		}
-
 		*settings.Mode = conf.Mode
 	}
 
 	if len(mappings) > 0 {
-		typemaps := esdsl.NewTypeMapping()
-
-		for _, mapping := range mappings {
-			parts := strings.Split(mapping, ":")
-			if len(parts) != 2 {
-				return fmt.Errorf(
-					"invalid mapping %s, expect <name:type> (type: integer, text, date, keyword)",
-					mapping)
-			}
-
-			switch parts[1] {
-			case "text":
-				typemaps.AddProperty(parts[0], esdsl.NewTextProperty())
-			case "integer":
-				typemaps.AddProperty(parts[0], esdsl.NewIntegerNumberProperty())
-			case "date":
-				typemaps.AddProperty(parts[0], esdsl.NewDateProperty())
-			case "keyword":
-				typemaps.AddProperty(parts[0], esdsl.NewKeywordProperty())
-			}
+		typemaps, err := modMappings(mappings)
+		if err != nil {
+			return err
 		}
 
 		maps.Mappings(typemaps)
@@ -380,39 +310,19 @@ func IndexTemplateModify(conf *cfg.Config, name string, mappings []string) error
 	}
 
 	if len(conf.Meta) > 0 {
-		for _, meta := range conf.Meta {
-			parts := strings.Split(meta, ":")
-			if len(parts) != 2 {
-				return errors.New("meta data must be in the form key:value")
-			}
-
-			msg, err := json.Marshal(parts[1])
-			if err != nil {
-				return fmt.Errorf("failed to json marshal metadata %s: %w", meta, err)
-			}
-
-			metadata[parts[0]] = msg
+		// pre fill meta, if any
+		metadata, err := modMeta(conf, tpl.IndexTemplate.Meta_)
+		if err != nil {
+			return err
 		}
 
+		modify.Meta_(esdsl.NewMetadata(metadata))
 	}
 
-	modify.Meta_(esdsl.NewMetadata(metadata))
-
 	if len(conf.Settings) > 0 {
-		usersettings := map[string]json.RawMessage{}
-
-		for _, meta := range conf.Settings {
-			parts := strings.Split(meta, ":")
-			if len(parts) != 2 {
-				return errors.New("settings data must be in the form key:value")
-			}
-
-			msg, err := json.Marshal(parts[1])
-			if err != nil {
-				return fmt.Errorf("failed to json marshal metadata %s: %w", meta, err)
-			}
-
-			usersettings[parts[0]] = msg
+		usersettings, err := modSettings(conf)
+		if err != nil {
+			return err
 		}
 
 		settings.IndexSettings = usersettings
@@ -447,3 +357,73 @@ func IndexTemplateDelete(conf *cfg.Config, name string) error {
 
 	return nil
 }
+
+func modMappings(mappings []string) (types.TypeMappingVariant, error) {
+	typemaps := esdsl.NewTypeMapping()
+
+	for _, mapping := range mappings {
+		parts := strings.Split(mapping, ":")
+		if len(parts) != 2 {
+			return nil, fmt.Errorf(
+				"invalid mapping %s, expect <name:type> (type: integer, text, date, keyword)",
+				mapping)
+		}
+
+		switch parts[1] {
+		case "text":
+			typemaps.AddProperty(parts[0], esdsl.NewTextProperty())
+		case "integer":
+			typemaps.AddProperty(parts[0], esdsl.NewIntegerNumberProperty())
+		case "date":
+			typemaps.AddProperty(parts[0], esdsl.NewDateProperty())
+		case "keyword":
+			typemaps.AddProperty(parts[0], esdsl.NewKeywordProperty())
+		}
+	}
+
+	return typemaps, nil
+}
+
+func modMeta(conf *cfg.Config, meta types.Metadata) (map[string]json.RawMessage, error) {
+	metadata := map[string]json.RawMessage{}
+
+	for key, value := range meta {
+		metadata[key] = value
+	}
+
+	for _, meta := range conf.Meta {
+		parts := strings.Split(meta, ":")
+		if len(parts) != 2 {
+			return nil, errors.New("meta data must be in the form key:value")
+		}
+
+		msg, err := json.Marshal(parts[1])
+		if err != nil {
+			return nil, fmt.Errorf("failed to json marshal metadata %s: %w", meta, err)
+		}
+
+		metadata[parts[0]] = msg
+	}
+
+	return metadata, nil
+}
+
+func modSettings(conf *cfg.Config) (map[string]json.RawMessage, error) {
+	usersettings := map[string]json.RawMessage{}
+
+	for _, meta := range conf.Settings {
+		parts := strings.Split(meta, ":")
+		if len(parts) != 2 {
+			return nil, errors.New("settings data must be in the form key:value")
+		}
+
+		msg, err := json.Marshal(parts[1])
+		if err != nil {
+			return nil, fmt.Errorf("failed to json marshal metadata %s: %w", meta, err)
+		}
+
+		usersettings[parts[0]] = msg
+	}
+
+	return usersettings, nil
+}