diff --git a/backend/composer/services/cs_ingestion/cs_ingestion_services.py b/backend/composer/services/cs_ingestion/cs_ingestion_services.py
index f4bc4d14..a540cfeb 100644
--- a/backend/composer/services/cs_ingestion/cs_ingestion_services.py
+++ b/backend/composer/services/cs_ingestion/cs_ingestion_services.py
@@ -339,10 +339,10 @@ def get_circuit_type(statement: Dict):
     if statement[CIRCUIT_TYPE]:
         if len(statement[CIRCUIT_TYPE]) > 1:
             logger_service.add_anomaly(LoggableAnomaly(statement[ID], None, f'Multiple circuit types found'))
-        return CIRCUIT_TYPE_MAPPING.get(statement[CIRCUIT_TYPE][0], CircuitType.UNKNOWN)
+        return CIRCUIT_TYPE_MAPPING.get(statement[CIRCUIT_TYPE][0], None)
     else:
         logger_service.add_anomaly(LoggableAnomaly(statement[ID], None, f'No circuit type found.'))
-        return CircuitType.UNKNOWN
+        return None
 
 
 def get_phenotype(statement: Dict) -> Optional[Phenotype]:
diff --git a/backend/composer/services/cs_ingestion/helpers.py b/backend/composer/services/cs_ingestion/helpers.py
index ee42fbc7..7016e6ad 100644
--- a/backend/composer/services/cs_ingestion/helpers.py
+++ b/backend/composer/services/cs_ingestion/helpers.py
@@ -1,8 +1,7 @@
 import logging
-from typing import Optional, Dict
 
 from composer.enums import CircuitType
-from composer.models import AnatomicalEntity, ConnectivityStatement
+from composer.models import AnatomicalEntity
 
 ID = "id"
 ORIGINS = "origins"
@@ -26,7 +25,7 @@
     "http://uri.interlex.org/tgbugs/uris/readable/ProjectionPhenotype": CircuitType.PROJECTION,
     "http://uri.interlex.org/tgbugs/uris/readable/MotorPhenotype": CircuitType.MOTOR,
     "http://uri.interlex.org/tgbugs/uris/readable/SensoryPhenotype": CircuitType.SENSORY,
-    "": CircuitType.UNKNOWN
+    "": None
 }
 
 VALIDATION_ERRORS = "validation_errors"
diff --git a/frontend/src/Pages/StatementDetails.tsx b/frontend/src/Pages/StatementDetails.tsx
index ac8652a6..59d0424a 100644
--- a/frontend/src/Pages/StatementDetails.tsx
+++ b/frontend/src/Pages/StatementDetails.tsx
@@ -116,7 +116,7 @@ const StatementDetails = () => {
 
   //TODO add logic for isDisabled
   // TODO add an extra check for invalid state;
-  const isDisabled = statement?.state === statementStates.Exported;
+  const isDisabled = statement?.state === statementStates.Exported || statement?.state === statementStates.Invalid;
   return (
     <Grid p={6} container>
       {loading && (
diff --git a/frontend/src/helpers/helpers.ts b/frontend/src/helpers/helpers.ts
index 65cc289a..304df2e9 100644
--- a/frontend/src/helpers/helpers.ts
+++ b/frontend/src/helpers/helpers.ts
@@ -132,7 +132,7 @@ export const StatementsLabels = {
   [statementStates.Exported]: "Exported",
   [statementStates.InProgress]: "In progress",
   [statementStates.Invalid]: "invalid",
-  [statementStates.NpoApproved]: "NPO approved",
+  [statementStates.NpoApproved]: "NPO approval",
   [statementStates.Rejected]: "Reject",
   [statementStates.Revise]: "Revise",
   [statementStates.ToBeReviewed]: "To be reviewed",
diff --git a/openapi/openapi.yaml b/openapi/openapi.yaml
index 7a573af1..9b2b1d3d 100644
--- a/openapi/openapi.yaml
+++ b/openapi/openapi.yaml
@@ -162,6 +162,7 @@ paths:
             - rejected
             - revise
             - to_be_reviewed
+            - invalid
         explode: true
         style: form
       - in: query