diff --git a/changelogs/fragments/6318-add-form-flow.yml b/changelogs/fragments/6318-add-form-flow.yml
new file mode 100644
index 0000000000..db567f4faf
--- /dev/null
+++ b/changelogs/fragments/6318-add-form-flow.yml
@@ -0,0 +1,5 @@
+bugfixes:
+  - "keycloak - improve error messages (https://github.com/ansible-collections/community.general/pull/6318)."
+
+minor_changes:
+  - "keycloak_authentication - add flow type option to sub flows to allow the creation of 'form-flow' sub flows like in Keycloak's built-in registration flow (https://github.com/ansible-collections/community.general/pull/6318)."
diff --git a/plugins/module_utils/identity/keycloak/keycloak.py b/plugins/module_utils/identity/keycloak/keycloak.py
index c22ed21cd5..8be36333e6 100644
--- a/plugins/module_utils/identity/keycloak/keycloak.py
+++ b/plugins/module_utils/identity/keycloak/keycloak.py
@@ -1930,6 +1930,9 @@ class KeycloakAPI(object):
                 data=json.dumps(updatedExec),
                 timeout=self.connection_timeout,
                 validate_certs=self.validate_certs)
+        except HTTPError as e:
+            self.module.fail_json(msg="Unable to update execution '%s': %s: %s %s" %
+                                      (flowAlias, repr(e), ";".join([e.url, e.msg, str(e.code), str(e.hdrs)]), str(updatedExec)))
         except Exception as e:
             self.module.fail_json(msg="Unable to update executions %s: %s" % (updatedExec, str(e)))
 
@@ -1954,7 +1957,7 @@ class KeycloakAPI(object):
         except Exception as e:
             self.module.fail_json(msg="Unable to add authenticationConfig %s: %s" % (executionId, str(e)))
 
-    def create_subflow(self, subflowName, flowAlias, realm='master'):
+    def create_subflow(self, subflowName, flowAlias, realm='master', flowType='basic-flow'):
         """ Create new sublow on the flow
 
         :param subflowName: name of the subflow to create
@@ -1965,7 +1968,7 @@ class KeycloakAPI(object):
             newSubFlow = {}
             newSubFlow["alias"] = subflowName
             newSubFlow["provider"] = "registration-page-form"
-            newSubFlow["type"] = "basic-flow"
+            newSubFlow["type"] = flowType
             open_url(
                 URL_AUTHENTICATION_FLOW_EXECUTIONS_FLOW.format(
                     url=self.baseurl,
@@ -2000,8 +2003,11 @@ class KeycloakAPI(object):
                 data=json.dumps(newExec),
                 timeout=self.connection_timeout,
                 validate_certs=self.validate_certs)
+        except HTTPError as e:
+            self.module.fail_json(msg="Unable to create new execution '%s' %s: %s: %s %s" %
+                                  (flowAlias, execution["providerId"], repr(e), ";".join([e.url, e.msg, str(e.code), str(e.hdrs)]), str(newExec)))
         except Exception as e:
-            self.module.fail_json(msg="Unable to create new execution %s: %s" % (execution["provider"], str(e)))
+            self.module.fail_json(msg="Unable to create new execution '%s' %s: %s" % (flowAlias, execution["providerId"], repr(e)))
 
     def change_execution_priority(self, executionId, diff, realm='master'):
         """ Raise or lower execution priority of diff time
diff --git a/plugins/modules/keycloak_authentication.py b/plugins/modules/keycloak_authentication.py
index 5db9bc9318..6143d9d5cd 100644
--- a/plugins/modules/keycloak_authentication.py
+++ b/plugins/modules/keycloak_authentication.py
@@ -79,6 +79,14 @@ options:
                 description:
                     - Priority order of the execution.
                 type: int
+            subFlowType:
+                description:
+                    - For new subflows, optionally specify the type.
+                    - Is only used at creation.
+                choices: ["basic-flow", "form-flow"]
+                default: "basic-flow"
+                type: str
+                version_added: 6.6.0
     state:
         description:
             - Control if the authentication flow must exists or not.
@@ -264,7 +272,7 @@ def create_or_update_executions(kc, config, realm='master'):
                 exec_index = find_exec_in_executions(new_exec, existing_executions)
                 if exec_index != -1:
                     # Remove key that doesn't need to be compared with existing_exec
-                    exclude_key = ["flowAlias"]
+                    exclude_key = ["flowAlias", "subFlowType"]
                     for index_key, key in enumerate(new_exec, start=0):
                         if new_exec[key] is None:
                             exclude_key.append(key)
@@ -282,7 +290,7 @@ def create_or_update_executions(kc, config, realm='master'):
                     id_to_update = kc.get_executions_representation(config, realm=realm)[exec_index]["id"]
                     after += str(new_exec) + '\n'
                 elif new_exec["displayName"] is not None:
-                    kc.create_subflow(new_exec["displayName"], flow_alias_parent, realm=realm)
+                    kc.create_subflow(new_exec["displayName"], flow_alias_parent, realm=realm, flowType=new_exec["subFlowType"])
                     exec_found = True
                     exec_index = new_exec_index
                     id_to_update = kc.get_executions_representation(config, realm=realm)[exec_index]["id"]
@@ -299,7 +307,7 @@ def create_or_update_executions(kc, config, realm='master'):
                             kc.add_authenticationConfig_to_execution(updated_exec["id"], new_exec["authenticationConfig"], realm=realm)
                         for key in new_exec:
                             # remove unwanted key for the next API call
-                            if key != "flowAlias" and key != "authenticationConfig":
+                            if key not in ("flowAlias", "authenticationConfig", "subFlowType"):
                                 updated_exec[key] = new_exec[key]
                         if new_exec["requirement"] is not None:
                             kc.update_authentication_executions(flow_alias_parent, updated_exec, realm=realm)
@@ -334,6 +342,7 @@ def main():
                                           flowAlias=dict(type='str'),
                                           authenticationConfig=dict(type='dict'),
                                           index=dict(type='int'),
+                                          subFlowType=dict(choices=["basic-flow", "form-flow"], default='basic-flow', type='str'),
                                       )),
         state=dict(choices=["absent", "present"], default='present'),
         force=dict(type='bool', default=False),