diff --git a/packages/cactus-plugin-ledger-connector-fabric/src/main/json/openapi.json b/packages/cactus-plugin-ledger-connector-fabric/src/main/json/openapi.json
index 183869ac11..9037c59c34 100644
--- a/packages/cactus-plugin-ledger-connector-fabric/src/main/json/openapi.json
+++ b/packages/cactus-plugin-ledger-connector-fabric/src/main/json/openapi.json
@@ -123,11 +123,11 @@
           },
           "vaultTransitKey": {
             "$ref": "#/components/schemas/VaultTransitKey",
-            "properties": "vault key details , if Vault-X.509 identity provider to be used for singing fabric messages"
+            "description": "vault key details , if Vault-X.509 identity provider to be used for singing fabric messages"
           },
           "webSocketKey": {
             "$ref": "#/components/schemas/WebSocketKey",
-            "properties": "web-socket key details , if WS-X.509 identity provider to be used for singing fabric messages"
+            "description": "web-socket key details , if WS-X.509 identity provider to be used for singing fabric messages"
           }
         }
       },
@@ -878,6 +878,7 @@
             "items": {
               "$ref": "#/components/schemas/FileBase64"
             },
+            "type": "array",
             "minItems": 1,
             "maxItems": 65535,
             "nullable": false