diff --git a/config/config.go b/config/config.go
index 66ce0ff9..c6d4c641 100644
--- a/config/config.go
+++ b/config/config.go
@@ -52,6 +52,8 @@ const (
 	FlagOutputFile = "output"
 	// FlagMaxAmount is the flag to avoid to use the flag FlagAmount
 	FlagMaxAmount = "max-amount"
+
+	deprecatedFieldSyncDB = "Aggregator.Synchronizer.DB is deprecated use Aggregator.Synchronizer.SQLDB instead"
 )
 
 type ForbiddenField struct {
@@ -62,8 +64,32 @@ type ForbiddenField struct {
 var (
 	forbiddenFieldsOnConfig = []ForbiddenField{
 		{
-			FieldName: "Aggregator.Synchronizer.DB",
-			Reason:    "Field deprecated use Aggregator.Synchronizer.SQLDB instead",
+			FieldName: "aggregator.synchronizer.db.port",
+			Reason:    deprecatedFieldSyncDB,
+		},
+		{
+			FieldName: "aggregator.synchronizer.db.host",
+			Reason:    deprecatedFieldSyncDB,
+		},
+		{
+			FieldName: "aggregator.synchronizer.db.enablelog",
+			Reason:    deprecatedFieldSyncDB,
+		},
+		{
+			FieldName: "aggregator.synchronizer.db.password",
+			Reason:    deprecatedFieldSyncDB,
+		},
+		{
+			FieldName: "aggregator.synchronizer.db.user",
+			Reason:    deprecatedFieldSyncDB,
+		},
+		{
+			FieldName: "aggregator.synchronizer.db.name",
+			Reason:    deprecatedFieldSyncDB,
+		},
+		{
+			FieldName: "aggregator.synchronizer.db.maxcoons",
+			Reason:    deprecatedFieldSyncDB,
 		},
 	}
 )
@@ -201,7 +227,7 @@ func Load(ctx *cli.Context) (*Config, error) {
 			if forbbidenInfo != nil {
 				log.Warnf("forbidden field %s in config file: %s", field, forbbidenInfo.Reason)
 			} else {
-				log.Warnf("unexpected field %s in config file", field)
+				log.Debugf("field %s in config file doesnt have a default value", field)
 			}
 		}
 	}
diff --git a/config/default.go b/config/default.go
index 624f29eb..6bfb7495 100644
--- a/config/default.go
+++ b/config/default.go
@@ -106,6 +106,10 @@ SequencerPrivateKey = {}
 				L1ChainID = 11155111
 				HTTPHeaders = []
 	[Aggregator.Synchronizer]
+		[Aggregator.Synchronizer.Log]
+			Environment = "development" # "production" or "development"
+			Level = "info"
+			Outputs = ["stderr"]
 		[Aggregator.Synchronizer.SQLDB]
 			DriverName = "sqlite3"
 			DataSourceName = "file:/tmp/aggregator_sync_db.sqlite"
@@ -117,9 +121,19 @@ SequencerPrivateKey = {}
 			BlockFinality = "finalized"
 			OverrideStorageCheck = false
 		[Aggregator.Synchronizer.Etherman]
+			L1URL = "http://localhost:8545"
+			ForkIDChunkSize = 100
+			L1ChainID = 0
 			[Aggregator.Synchronizer.Etherman.Validium]
 				Enabled = false
-
+				TrustedSequencerURL = ""
+				RetryOnDACErrorInterval = "1m"
+				DataSourcePriority = ["trusted", "external"]
+			[Aggregator.Synchronizer.Etherman.Validium.Translator]
+				FullMatchRules = []
+			[Aggregator.Synchronizer.Etherman.Validium.RateLimit]
+				NumRequests = 900
+				Interval = "1s"
 [ReorgDetectorL1]
 DBPath = "/tmp/reorgdetectorl1"