fix: fix bugs and structure

src/i18n/en/common.json

@@ -3,7 +3,8 @@
     "internalServerError": "Internal Server Error",
     "tooManyRequests": "Too many requests! Try again after {minutes} min.",
     "requestTimeout": "Unable to process your request at the moment.",
-    "entityNotFound": "{entity} not found."
+    "entityNotFound": "{entity} not found.",
+    "sameProcessInProgress": "Same process is in progress."
   },
   "messages": {
     "createSuccess": "{entity} created successfully.",

src/i18n/en/submissions.json

@@ -12,6 +12,7 @@
     "emptyNumericValue": "A numeric value should be provided as answer.",
     "numericValueRange": "Numeric value is out of specified range.",
     "emptyChoiceId": "Choice Id should be provided as answer.",
-    "transitionNotFound": "No transition found for the test"
+    "transitionNotFound": "No transition found for the test",
+    "uniqueSubmissionQuestion": "Question's Answer already exists."
   }
 }