diff --git a/api/spec/v1.yaml b/api/spec/v1.yaml
index 7f84109a7..75097944d 100644
--- a/api/spec/v1.yaml
+++ b/api/spec/v1.yaml
@@ -1226,6 +1226,15 @@ components:
         success:
           type: boolean
           description: Whether this transaction successfully executed.
+        code:
+          type: integer
+          description: The status code of a failed call.
+        module:
+          type: string
+          description: The module of a failed call.
+        message:
+          type: string
+          description: The message of a failed call.
       description: |
         A consensus transaction.
 
diff --git a/storage/client/client.go b/storage/client/client.go
index 11b322b01..d1841d4b9 100644
--- a/storage/client/client.go
+++ b/storage/client/client.go
@@ -261,7 +261,8 @@ func (c *StorageClient) Transactions(ctx context.Context, p apiTypes.GetConsensu
 	}
 	for res.rows.Next() {
 		var t Transaction
-		var code uint64
+		var module string
+		var message string
 		if err := res.rows.Scan(
 			&t.Block,
 			&t.Index,
@@ -271,13 +272,18 @@ func (c *StorageClient) Transactions(ctx context.Context, p apiTypes.GetConsensu
 			&t.Fee,
 			&t.Method,
 			&t.Body,
-			&code,
+			&t.Code,
+			&module,
+			&message,
 			&t.Timestamp,
 		); err != nil {
 			return nil, wrapError(err)
 		}
-		if code == oasisErrors.CodeNoError {
+		if *t.Code == oasisErrors.CodeNoError {
 			t.Success = true
+		} else {
+			t.Module = &module
+			t.Message = &message
 		}
 
 		ts.Transactions = append(ts.Transactions, t)
@@ -295,7 +301,8 @@ func (c *StorageClient) Transaction(ctx context.Context, txHash string) (*Transa
 	}
 
 	var t Transaction
-	var code uint64
+	var module string
+	var message string
 	if err := c.db.QueryRow(
 		ctx,
 		queries.Transaction,
@@ -309,13 +316,18 @@ func (c *StorageClient) Transaction(ctx context.Context, txHash string) (*Transa
 		&t.Fee,
 		&t.Method,
 		&t.Body,
-		&code,
+		&t.Code,
+		&module,
+		&message,
 		&t.Timestamp,
 	); err != nil {
 		return nil, wrapError(err)
 	}
-	if code == oasisErrors.CodeNoError {
+	if *t.Code == oasisErrors.CodeNoError {
 		t.Success = true
+	} else {
+		t.Module = &module
+		t.Message = &message
 	}
 
 	c.cacheTx(&t)
diff --git a/storage/client/queries/queries.go b/storage/client/queries/queries.go
index d6e1f317b..78efd0dde 100644
--- a/storage/client/queries/queries.go
+++ b/storage/client/queries/queries.go
@@ -44,6 +44,8 @@ const (
 				chain.transactions.method as method,
 				chain.transactions.body as body,
 				chain.transactions.code as code,
+				chain.transactions.module as module,
+				chain.transactions.message as message,
 				chain.blocks.time as time
 			FROM chain.transactions
 			JOIN chain.blocks ON chain.transactions.block = chain.blocks.height
@@ -64,7 +66,7 @@ const (
 			OFFSET $9::bigint`
 
 	Transaction = `
-		SELECT block, tx_index, tx_hash, sender, nonce, fee_amount, method, body, code, chain.blocks.time
+		SELECT block, tx_index, tx_hash, sender, nonce, fee_amount, method, body, code, module, message, chain.blocks.time
 			FROM chain.transactions
 			JOIN chain.blocks ON chain.transactions.block = chain.blocks.height
 			WHERE tx_hash = $1::text`