diff --git a/changelogs/fragments/10298--keycloak-api-fix-stable9.yml b/changelogs/fragments/10298--keycloak-api-fix-stable9.yml
new file mode 100644
index 0000000000..ad54dd4eb0
--- /dev/null
+++ b/changelogs/fragments/10298--keycloak-api-fix-stable9.yml
@@ -0,0 +1,2 @@
+bugfixes:
+  - "keycloak module_utils - fix call of method which does not exist in stable-9, which was introduced by backporting 8b1a193a (https://github.com/ansible-collections/community.general/pull/10298)."
diff --git a/plugins/module_utils/identity/keycloak/keycloak.py b/plugins/module_utils/identity/keycloak/keycloak.py
index 02465a70fa..c63f668c6a 100644
--- a/plugins/module_utils/identity/keycloak/keycloak.py
+++ b/plugins/module_utils/identity/keycloak/keycloak.py
@@ -2236,14 +2236,17 @@ class KeycloakAPI(object):
         """
         try:
             # Send a DELETE request to remove the specified authentication config from the Keycloak server.
-            self._request(
+            open_url(
                 URL_AUTHENTICATION_CONFIG.format(
                     url=self.baseurl,
                     realm=realm,
                     id=configId),
-                method='DELETE')
+                method='DELETE',
+                http_agent=self.http_agent, headers=self.restheaders,
+                timeout=self.connection_timeout,
+                validate_certs=self.validate_certs)
         except Exception as e:
-            self.fail_request(e, msg="Unable to delete authentication config %s: %s" % (configId, str(e)))
+            self.fail_open_url(e, msg="Unable to delete authentication config %s: %s" % (configId, str(e)))
 
     def create_subflow(self, subflowName, flowAlias, realm='master', flowType='basic-flow'):
         """ Create new sublow on the flow