diff --git a/cli/smartcontract/testdata/nameservice/nns.go b/cli/smartcontract/testdata/nameservice/nns.go
index 4c3a76d6f..076aaa438 100644
--- a/cli/smartcontract/testdata/nameservice/nns.go
+++ b/cli/smartcontract/testdata/nameservice/nns.go
@@ -354,7 +354,7 @@ func SetAdminEventsFromApplicationLog(log *result.ApplicationLog) ([]*SetAdminEv
 			event := new(SetAdminEvent)
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize SetAdminEvent from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize SetAdminEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}
@@ -447,7 +447,7 @@ func RenewEventsFromApplicationLog(log *result.ApplicationLog) ([]*RenewEvent, e
 			event := new(RenewEvent)
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize RenewEvent from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize RenewEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}
diff --git a/cli/smartcontract/testdata/nex/nex.go b/cli/smartcontract/testdata/nex/nex.go
index f558fb513..ac530f79c 100644
--- a/cli/smartcontract/testdata/nex/nex.go
+++ b/cli/smartcontract/testdata/nex/nex.go
@@ -258,7 +258,7 @@ func OnMintEventsFromApplicationLog(log *result.ApplicationLog) ([]*OnMintEvent,
 			event := new(OnMintEvent)
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize OnMintEvent from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize OnMintEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}
diff --git a/cli/smartcontract/testdata/notifications/rpcbindings.out b/cli/smartcontract/testdata/notifications/rpcbindings.out
index ea40f64ea..4b95b5a65 100644
--- a/cli/smartcontract/testdata/notifications/rpcbindings.out
+++ b/cli/smartcontract/testdata/notifications/rpcbindings.out
@@ -784,7 +784,7 @@ func ComplicatedNameEventsFromApplicationLog(log *result.ApplicationLog) ([]*Com
 			event := new(ComplicatedNameEvent)
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize ComplicatedNameEvent from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize ComplicatedNameEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}
@@ -845,7 +845,7 @@ func SomeMapEventsFromApplicationLog(log *result.ApplicationLog) ([]*SomeMapEven
 			event := new(SomeMapEvent)
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize SomeMapEvent from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize SomeMapEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}
@@ -915,7 +915,7 @@ func SomeStructEventsFromApplicationLog(log *result.ApplicationLog) ([]*SomeStru
 			event := new(SomeStructEvent)
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize SomeStructEvent from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize SomeStructEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}
@@ -980,7 +980,7 @@ func SomeArrayEventsFromApplicationLog(log *result.ApplicationLog) ([]*SomeArray
 			event := new(SomeArrayEvent)
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize SomeArrayEvent from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize SomeArrayEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}
diff --git a/cli/smartcontract/testdata/notifications/rpcbindings_extended.out b/cli/smartcontract/testdata/notifications/rpcbindings_extended.out
index 0c64320a8..9b269e2eb 100755
--- a/cli/smartcontract/testdata/notifications/rpcbindings_extended.out
+++ b/cli/smartcontract/testdata/notifications/rpcbindings_extended.out
@@ -830,7 +830,7 @@ func ComplicatedNameEventsFromApplicationLog(log *result.ApplicationLog) ([]*Com
 			event := new(ComplicatedNameEvent)
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize ComplicatedNameEvent from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize ComplicatedNameEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}
@@ -891,7 +891,7 @@ func SomeMapEventsFromApplicationLog(log *result.ApplicationLog) ([]*SomeMapEven
 			event := new(SomeMapEvent)
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize SomeMapEvent from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize SomeMapEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}
@@ -1011,7 +1011,7 @@ func SomeStructEventsFromApplicationLog(log *result.ApplicationLog) ([]*SomeStru
 			event := new(SomeStructEvent)
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize SomeStructEvent from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize SomeStructEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}
@@ -1063,7 +1063,7 @@ func SomeArrayEventsFromApplicationLog(log *result.ApplicationLog) ([]*SomeArray
 			event := new(SomeArrayEvent)
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize SomeArrayEvent from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize SomeArrayEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}
diff --git a/cli/smartcontract/testdata/notifications/rpcbindings_guessed.out b/cli/smartcontract/testdata/notifications/rpcbindings_guessed.out
index c9c20ae5b..0fba2708c 100755
--- a/cli/smartcontract/testdata/notifications/rpcbindings_guessed.out
+++ b/cli/smartcontract/testdata/notifications/rpcbindings_guessed.out
@@ -830,7 +830,7 @@ func ComplicatedNameEventsFromApplicationLog(log *result.ApplicationLog) ([]*Com
 			event := new(ComplicatedNameEvent)
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize ComplicatedNameEvent from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize ComplicatedNameEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}
@@ -891,7 +891,7 @@ func SomeMapEventsFromApplicationLog(log *result.ApplicationLog) ([]*SomeMapEven
 			event := new(SomeMapEvent)
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize SomeMapEvent from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize SomeMapEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}
@@ -1024,7 +1024,7 @@ func SomeStructEventsFromApplicationLog(log *result.ApplicationLog) ([]*SomeStru
 			event := new(SomeStructEvent)
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize SomeStructEvent from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize SomeStructEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}
@@ -1076,7 +1076,7 @@ func SomeArrayEventsFromApplicationLog(log *result.ApplicationLog) ([]*SomeArray
 			event := new(SomeArrayEvent)
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize SomeArrayEvent from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize SomeArrayEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}
diff --git a/cli/smartcontract/testdata/verifyrpc/verify.go b/cli/smartcontract/testdata/verifyrpc/verify.go
index 6835a7e4e..dd3539901 100644
--- a/cli/smartcontract/testdata/verifyrpc/verify.go
+++ b/cli/smartcontract/testdata/verifyrpc/verify.go
@@ -93,7 +93,7 @@ func HelloWorldEventsFromApplicationLog(log *result.ApplicationLog) ([]*HelloWor
 			event := new(HelloWorldEvent)
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize HelloWorldEvent from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize HelloWorldEvent from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}
diff --git a/pkg/smartcontract/rpcbinding/binding.go b/pkg/smartcontract/rpcbinding/binding.go
index eb38be084..746dcb34b 100644
--- a/pkg/smartcontract/rpcbinding/binding.go
+++ b/pkg/smartcontract/rpcbinding/binding.go
@@ -278,7 +278,7 @@ func {{$e.Name}}sFromApplicationLog(log *result.ApplicationLog) ([]*{{$e.Name}},
 			event := new({{$e.Name}})
 			err := event.FromStackItem(e.Item)
 			if err != nil {
-				return nil, fmt.Errorf("failed to deserialize {{$e.Name}} from stackitem (execution %d, event %d): %w", i, j, err)
+				return nil, fmt.Errorf("failed to deserialize {{$e.Name}} from stackitem (execution #%d, event #%d): %w", i, j, err)
 			}
 			res = append(res, event)
 		}