diff --git a/passageidentity/openapi_client/api_client.py b/passageidentity/openapi_client/api_client.py
index bc0f34f..78da05d 100644
--- a/passageidentity/openapi_client/api_client.py
+++ b/passageidentity/openapi_client/api_client.py
@@ -518,7 +518,7 @@ def parameters_to_url_query(self, params, collection_formats):
             if k in collection_formats:
                 collection_format = collection_formats[k]
                 if collection_format == 'multi':
-                    new_params.extend((k, str(value)) for value in v)
+                    new_params.extend((k, quote(str(value))) for value in v)
                 else:
                     if collection_format == 'ssv':
                         delimiter = ' '
diff --git a/passageidentity/openapi_client/configuration.py b/passageidentity/openapi_client/configuration.py
index 6cb15b1..89ad3d4 100644
--- a/passageidentity/openapi_client/configuration.py
+++ b/passageidentity/openapi_client/configuration.py
@@ -19,7 +19,7 @@
 from logging import FileHandler
 import multiprocessing
 import sys
-from typing import Any, ClassVar, Dict, List, Literal, Optional, TypedDict
+from typing import Any, ClassVar, Dict, List, Literal, Optional, TypedDict, Union
 from typing_extensions import NotRequired, Self
 
 import urllib3
@@ -162,6 +162,8 @@ class Configuration:
     :param ssl_ca_cert: str - the path to a file of concatenated CA certificates
       in PEM format.
     :param retries: Number of retries for API requests.
+    :param ca_cert_data: verify the peer using concatenated CA certificate data
+      in PEM (str) or DER (bytes) format.
 
     :Example:
     """
@@ -176,13 +178,14 @@ def __init__(
         username: Optional[str]=None,
         password: Optional[str]=None,
         access_token: Optional[str]=None,
-        server_index: Optional[int]=None, 
+        server_index: Optional[int]=None,
         server_variables: Optional[ServerVariablesT]=None,
         server_operation_index: Optional[Dict[int, int]]=None,
         server_operation_variables: Optional[Dict[int, ServerVariablesT]]=None,
         ignore_operation_servers: bool=False,
         ssl_ca_cert: Optional[str]=None,
         retries: Optional[int] = None,
+        ca_cert_data: Optional[Union[str, bytes]] = None,
         *,
         debug: Optional[bool] = None,
     ) -> None:
@@ -260,6 +263,10 @@ def __init__(
         self.ssl_ca_cert = ssl_ca_cert
         """Set this to customize the certificate file to verify the peer.
         """
+        self.ca_cert_data = ca_cert_data
+        """Set this to verify the peer using PEM (str) or DER (bytes)
+           certificate data.
+        """
         self.cert_file = None
         """client certificate file
         """
diff --git a/passageidentity/openapi_client/exceptions.py b/passageidentity/openapi_client/exceptions.py
index c303cf9..0ee136c 100644
--- a/passageidentity/openapi_client/exceptions.py
+++ b/passageidentity/openapi_client/exceptions.py
@@ -151,6 +151,13 @@ def from_response(
         if http_resp.status == 404:
             raise NotFoundException(http_resp=http_resp, body=body, data=data)
 
+        # Added new conditions for 409 and 422
+        if http_resp.status == 409:
+            raise ConflictException(http_resp=http_resp, body=body, data=data)
+
+        if http_resp.status == 422:
+            raise UnprocessableEntityException(http_resp=http_resp, body=body, data=data)
+
         if 500 <= http_resp.status <= 599:
             raise ServiceException(http_resp=http_resp, body=body, data=data)
         raise ApiException(http_resp=http_resp, body=body, data=data)
@@ -189,6 +196,16 @@ class ServiceException(ApiException):
     pass
 
 
+class ConflictException(ApiException):
+    """Exception for HTTP 409 Conflict."""
+    pass
+
+
+class UnprocessableEntityException(ApiException):
+    """Exception for HTTP 422 Unprocessable Entity."""
+    pass
+
+
 def render_path(path_to_item):
     """Returns a string representation of a path"""
     result = ""
diff --git a/passageidentity/openapi_client/rest.py b/passageidentity/openapi_client/rest.py
index ce85aa5..4bf7c2d 100644
--- a/passageidentity/openapi_client/rest.py
+++ b/passageidentity/openapi_client/rest.py
@@ -77,6 +77,7 @@ def __init__(self, configuration) -> None:
             "ca_certs": configuration.ssl_ca_cert,
             "cert_file": configuration.cert_file,
             "key_file": configuration.key_file,
+            "ca_cert_data": configuration.ca_cert_data,
         }
         if configuration.assert_hostname is not None:
             pool_args['assert_hostname'] = (