diff --git a/src/main/java/org/qortal/api/resource/TransactionsResource.java b/src/main/java/org/qortal/api/resource/TransactionsResource.java
index 292d7f50..c37c67b0 100644
--- a/src/main/java/org/qortal/api/resource/TransactionsResource.java
+++ b/src/main/java/org/qortal/api/resource/TransactionsResource.java
@@ -573,7 +573,7 @@ public class TransactionsResource {
 
 	public static ApiException createTransactionInvalidException(HttpServletRequest request, ValidationResult result) {
 		String translatedResult = Translator.INSTANCE.translate("TransactionValidity", request.getLocale().getLanguage(), result.name());
-		return ApiExceptionFactory.INSTANCE.createException(request, ApiError.TRANSACTION_INVALID, null, translatedResult);
+		return ApiExceptionFactory.INSTANCE.createException(request, ApiError.TRANSACTION_INVALID, null, translatedResult, result.name());
 	}
 
 }
diff --git a/src/main/resources/i18n/ApiError_en.properties b/src/main/resources/i18n/ApiError_en.properties
index 52d99740..6b72c8fc 100644
--- a/src/main/resources/i18n/ApiError_en.properties
+++ b/src/main/resources/i18n/ApiError_en.properties
@@ -48,7 +48,7 @@ PUBLIC_KEY_NOT_FOUND = public key not found
 
 REPOSITORY_ISSUE = repository error
 
-TRANSACTION_INVALID = transaction invalid: %s
+TRANSACTION_INVALID = transaction invalid: %s (%s)
 
 TRANSACTION_UNKNOWN = transaction unknown
 
diff --git a/src/main/resources/i18n/TransactionValidity_en.properties b/src/main/resources/i18n/TransactionValidity_en.properties
index e162b7c0..d3530d46 100644
--- a/src/main/resources/i18n/TransactionValidity_en.properties
+++ b/src/main/resources/i18n/TransactionValidity_en.properties
@@ -1,4 +1,6 @@
 
+ACCOUNT_ALREADY_EXISTS = account already exists
+
 ACCOUNT_CANNOT_REWARD_SHARE = account cannot reward-share
 
 ALREADY_GROUP_ADMIN = already group admin
@@ -139,7 +141,7 @@ NOT_YET_RELEASED = NOT_YET_RELEASED
 
 NO_BALANCE = NO_BALANCE
 
-NO_BLOCKCHAIN_LOCK = NO_BLOCKCHAIN_LOCK
+NO_BLOCKCHAIN_LOCK = node's blockchain currently busy
 
 NO_FLAG_PERMISSION = NO_FLAG_PERMISSION
 
diff --git a/src/test/java/org/qortal/test/apps/CheckTranslations.java b/src/test/java/org/qortal/test/apps/CheckTranslations.java
index ad6824ad..a263cd2a 100644
--- a/src/test/java/org/qortal/test/apps/CheckTranslations.java
+++ b/src/test/java/org/qortal/test/apps/CheckTranslations.java
@@ -14,7 +14,8 @@ public class CheckTranslations {
 
 	private static final String[] SUPPORTED_LANGS = new String[] { "en", "de", "zh", "ru" };
 	private static final Set<String> SYSTRAY_KEYS = Set.of("BLOCK_HEIGHT", "CHECK_TIME_ACCURACY", "CONNECTION", "CONNECTIONS",
-			"EXIT", "MINTING_DISABLED", "MINTING_ENABLED", "OPEN_UI", "SYNCHRONIZE_CLOCK", "SYNCHRONIZING_CLOCK");
+			"EXIT", "MINTING_DISABLED", "MINTING_ENABLED", "NTP_NAG_CAPTION", "NTP_NAG_TEXT_UNIX", "NTP_NAG_TEXT_WINDOWS",
+			"OPEN_UI", "SYNCHRONIZE_CLOCK", "SYNCHRONIZING_BLOCKCHAIN", "SYNCHRONIZING_CLOCK");
 
 	private static String failurePrefix;