diff --git a/logging.go b/logging.go
index f0ab491..547a361 100644
--- a/logging.go
+++ b/logging.go
@@ -6,6 +6,7 @@ import (
 	"log/slog"
 	"os"
 	"regexp"
+	"strings"
 )
 
 func New(c Customization) {
@@ -88,7 +89,7 @@ func SetNumericLevel(level int) {
 
 func setDefaults(c *Customization) error {
 	// \/ \/ \/ REQUIRED FIELDS \/ \/ \/ //
-	
+
 	// format, can be one of "json" or "text"
 	switch {
 	case len(c.Format) == 0:
@@ -124,14 +125,12 @@ func setDefaults(c *Customization) error {
 		return errors.New("Invalid application id, must be a valid uuid string.")
 	}
 
-	
-
 	// /\ /\ /\ REQUIRED FIELDS /\ /\ /\ //
 
 	return nil
 }
 
-func Fatal(msg string, attrs ...interface{}) {
+func Fatal(operation, correlationID, msg string, attrs ...interface{}) {
 	L.Log.Log(
 		L.Ctx,
 		LevelFatal,
@@ -140,7 +139,7 @@ func Fatal(msg string, attrs ...interface{}) {
 	)
 }
 
-func Error(msg string, attrs ...interface{}) {
+func Error(operation, correlationID, msg string, attrs ...interface{}) {
 	L.Log.Log(
 		L.Ctx,
 		slog.LevelError,
@@ -149,7 +148,7 @@ func Error(msg string, attrs ...interface{}) {
 	)
 }
 
-func Warn(msg string, attrs ...interface{}) {
+func Warn(operation, correlationID, msg string, attrs ...interface{}) {
 	L.Log.Log(
 		L.Ctx,
 		slog.LevelWarn,
@@ -158,7 +157,7 @@ func Warn(msg string, attrs ...interface{}) {
 	)
 }
 
-func Info(msg string, attrs ...interface{}) {
+func Info(operation, correlationID, msg string, attrs ...interface{}) {
 	L.Log.Log(
 		L.Ctx,
 		slog.LevelInfo,
@@ -167,7 +166,7 @@ func Info(msg string, attrs ...interface{}) {
 	)
 }
 
-func Debug(msg string, attrs ...interface{}) {
+func Debug(operation, correlationID, msg string, attrs ...interface{}) {
 	L.Log.Log(
 		L.Ctx,
 		slog.LevelDebug,
@@ -176,7 +175,7 @@ func Debug(msg string, attrs ...interface{}) {
 	)
 }
 
-func Trace(msg string, attrs ...interface{}) {
+func Trace(operation, correlationID, msg string, attrs ...interface{}) {
 	L.Log.Log(
 		L.Ctx,
 		LevelTrace,
diff --git a/structs.go b/structs.go
index 97759b7..9a79ebb 100644
--- a/structs.go
+++ b/structs.go
@@ -3,6 +3,7 @@ package log
 import (
 	"context"
 	"log/slog"
+	"time"
 )
 
 // primary struct
@@ -14,13 +15,47 @@ type Log struct {
 
 // field customization
 type Customization struct {
-	Application CustomizationValue
-	Format      string
-	TimeStamp   struct {
-		Key    string
-		Format string
-	}
-	Type CustomizationValue
+	Application       string
+	Format            string
+	TimeStamp         TimeStamp
+	Type              string
+	MobileApplication MobileApplication
+	Context           RequiredContext
+	Extra             ValueAdd
 }
 
-type CustomizationValue string
+type TimeStamp struct {
+	Key    string
+	Format string
+}
+
+type MobileApplication struct {
+	DeviceModel string
+	DeviceBrand string
+	OsType      string
+	OsVersion   string
+}
+
+type RequiredContext struct {
+	AuditID       string
+	Channel       string
+	Customer      string
+	DestPort      string
+	HttpMethod    string
+	JvmThread     string
+	RemoteIP      string
+	RequestID     string
+	RequestParams string
+	ResponseCode  int
+	ResponseTime  time.Duration
+	SessionID     string
+	SubOperation  string
+	Uri           string
+	UserID        string
+}
+
+type ValueAdd struct {
+	Customer        string
+	Product         string
+	RequestDomicile string
+}