Please refer attached case03189791-ocptest.zip. could reproduced the issue internally. kieapp CR   {{apiVersion: app.kiegroup.org/v2 kind: KieApp metadata: name: pam spec: auth: sso: adminPassword: adminadmin realm: rhpam url: https: //rhsso.apps.hmiura4.lab.rdu2.cee.redhat.com/auth commonConfig: adminPassword: password adminUser: adminuser startupStrategy: strategyName: OpenShiftStartupStrategy environment: rhpam-production objects: console: replicas: 1 ssoClient: name: console secret: 616fc12b-66fa-4183-9381-0c7b4b14d936 servers: env: name: KIE_SERVER_BYPASS_AUTH_USER value: " true " name: LOGGER_CATEGORIES value: org.kie.server:DEBUG,org.wildfly.security:TRACE,org.jbpm:TRACE replicas: 1 ssoClient: name: kieserver secret: c7a611a0-22a9-4417-9778-68eb2a02ca1b}} tested with very simple process that startNode -> HumanTask -> endNode. In HumanTask "cee" is set to Groups, nothing is specified to Actors. There are 2 users in RH-SSO with the following roles(both passwords are 'password'). ceeuser: kie-server, cee padmin: kie-server, kie-peocess-admin, Administrator Start Process:   {{$ curl -v -X POST -k "https: //pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com/services/ rest /server/containers/case03189791/processes/case03189791.proc1/instances" -H "accept: application/json" -H "content-type: application/json" -u padmin:password About to connect() to pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com port 443 (#0) Trying 10.10.94.11... Connected to pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com (10.10.94.11) port 443 (#0) Initializing NSS with certpath: sql:/etc/pki/nssdb skipping SSL peer certificate verification SSL connection using TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 Server certificate: subject: CN=pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com start date: Apr 07 03:46:03 2022 GMT expire date: Apr 07 03:46:03 2032 GMT common name: pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com issuer: CN=pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com Server auth using Basic with user 'padmin' > POST /services/ rest /server/containers/case03189791/processes/case03189791.proc1/instances HTTP/1.1 > Authorization: Basic cGFkbWluOnBhc3N3b3Jk > User-Agent: curl/7.29.0 > Host: pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com > accept: application/json > content-type: application/json > < HTTP/1.1 201 Created < Expires: 0 < Connection: keep-alive < Cache-Control: no-cache, no-store, must-revalidate < X-KIE-ConversationId: %27pam-kieserver%27%3A%27case03189791%27%3A%27com.myspace%3Acase03189791%3A1.0.0%27%3A%27cedef6a3-4ca4-4f07-a95d-55a39a7b024f%27 < Pragma: no-cache < Content-Type: application/json < Content-Length: 1 < Date: Thu, 07 Apr 2022 07:25:57 GMT < Connection #0 to host pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com left intact 5$}} ==> processInstanceId 5 is created. taskID must be same with processInstanceId   Claim task: {{$ curl -v -X POST -k "https: //pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com/services/ rest /server/containers/case03189791/tasks/states/claimed?taskId=5&user=ceeuser" -H "accept: application/json" -u padmin:password About to connect() to pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com port 443 (#0) Trying 10.10.94.11... Connected to pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com (10.10.94.11) port 443 (#0) Initializing NSS with certpath: sql:/etc/pki/nssdb skipping SSL peer certificate verification SSL connection using TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 Server certificate: subject: CN=pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com start date: Apr 07 03:46:03 2022 GMT expire date: Apr 07 03:46:03 2032 GMT common name: pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com issuer: CN=pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com Server auth using Basic with user 'padmin' > POST /services/ rest /server/containers/case03189791/tasks/states/claimed?taskId=5&user=ceeuser HTTP/1.1 > Authorization: Basic cGFkbWluOnBhc3N3b3Jk > User-Agent: curl/7.29.0 > Host: pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com > accept: application/json > < HTTP/1.1 200 OK < Expires: 0 < Connection: keep-alive < Cache-Control: no-cache, no-store, must-revalidate < X-KIE-ConversationId: %27pam-kieserver%27%3A%27case03189791%27%3A%27com.myspace%3Acase03189791%3A1.0.0%27%3A%27ab44d229-df87-420a-b842-1d2acea02d34%27 < Pragma: no-cache < Content-Type: application/json < Content-Length: 0 < Date: Thu, 07 Apr 2022 07:28:37 GMT < Connection #0 to host pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com left intact $}} Rest request succeeded with status 200. But warn happened in the log   07:28:37,646 TRACE [org.wildfly.security] ( default task-8) Evidence verification: evidence = org.keycloak.adapters.elytron.SecurityIdentityUtil$1@7a6d2f evidencePrincipal = padmin 07:28:37,646 TRACE [org.wildfly.security] ( default task-8) Principal assigning: [padmin], pre-realm rewritten: [padmin], realm name: [KeycloakOIDCRealm], post-realm rewritten: [padmin], realm rewritten: [padmin] 07:28:37,647 TRACE [org.wildfly.security] ( default task-8) Role mapping: principal [padmin] -> decoded roles [offline_access, kie-process-admin, Administrators, uma_authorization, kie-server, default -roles-rhpam] -> domain decoded roles [] -> realm mapped roles [offline_access, kie-process-admin, Administrators, uma_authorization, kie-server, default -roles-rhpam] -> domain mapped roles [offline_access, kie-process-admin, Administrators, uma_authorization, kie-server, default -roles-rhpam] 07:28:37,647 TRACE [org.wildfly.security] ( default task-8) Authorizing principal padmin. 07:28:37,647 TRACE [org.wildfly.security] ( default task-8) Authorizing against the following attributes: [Roles] => [offline_access, kie-process-admin, Administrators, uma_authorization, kie-server, default -roles-rhpam] 07:28:37,648 TRACE [org.wildfly.security] ( default task-8) Authorizing against the following runtime attributes: [Source-Address] => [10.131.0.1] 07:28:37,648 TRACE [org.wildfly.security] ( default task-8) Permission mapping: identity [padmin] with roles [offline_access, kie-process-admin, Administrators, uma_authorization, kie-server, default -roles-rhpam] implies ( "org.wildfly.security.auth.permission.LoginPermission" "") = true 07:28:37,660 TRACE [org.wildfly.security] ( default task-8) Authorization succeed 07:28:37,660 TRACE [org.wildfly.security] ( default task-8) Handling AuthorizeCallback: authenticationID = null authorizationID = null authorized = true 07:28:37,660 TRACE [org.wildfly.security] ( default task-8) Handling AuthenticationCompleteCallback: succeed 07:28:37,675 TRACE [org.wildfly.security] ( default task-8) Handling SecurityIdentityCallback: identity = SecurityIdentity{principal=padmin, securityDomain=org.wildfly.security.auth.server.SecurityDomain@4dd13c12, authorizationIdentity=EMPTY, realmInfo=RealmInfo {name= 'KeycloakOIDCRealm' , securityRealm=org.keycloak.adapters.elytron.KeycloakSecurityRealm@43e70edc}, creationTime=2022-04-07T07:28:37.647288Z} 07:28:37,676 TRACE [org.wildfly.security] ( default task-8) Handling SecurityIdentityCallback: identity = SecurityIdentity{principal=padmin, securityDomain=org.wildfly.security.auth.server.SecurityDomain@4dd13c12, authorizationIdentity=EMPTY, realmInfo=RealmInfo{name= 'KeycloakOIDCRealm' , securityRealm=org.keycloak.adapters.elytron.KeycloakSecurityRealm@43e70edc} , creationTime=2022-04-07T07:28:37.647288Z} 07:28:37,676 TRACE [org.wildfly.security] ( default task-8) Role mapping: principal [padmin] -> decoded roles [offline_access, kie-process-admin, Administrators, uma_authorization, kie-server, default -roles-rhpam] -> domain decoded roles [] -> realm mapped roles [offline_access, kie-process-admin, Administrators, uma_authorization, kie-server, default -roles-rhpam] -> domain mapped roles [offline_access, kie-process-admin, Administrators, uma_authorization, kie-server, default -roles-rhpam] 07:28:37,682 DEBUG [org.kie.server.common. rest .variant.AcceptHeaders] ( default task-8) {application/json=org.kie.server.common. rest .variant.QualityValue@3e8} 07:28:37,683 DEBUG [org.kie.server.services.jbpm.UserTaskServiceBase] ( default task-8) About to claim task with ids '[5]' as user 'ceeuser' 07:28:37,716 DEBUG [org.jbpm.services.task.persistence.JPATaskPersistenceContext] ( default task-8) TaskPersistenceManager configured with em SessionImpl(624835017<open>), isJTA true , pessimistic locking false 07:28:37,732 DEBUG [org.kie.server.services.jbpm.security.ElytronUserGroupCallbackImpl] ( default task-8) Adding roles from UserGroupAdapter service (WebSphereUserGroupAdapter) 07:28:37,732 DEBUG [org.kie.server.services.jbpm.security.ElytronUserGroupCallbackImpl] ( default task-8) Adding roles from UserGroupAdapter service (WeblogicUserGroupAdapter) 07:28:37,732 DEBUG [org.kie.server.services.jbpm.security.ElytronUserGroupCallbackImpl] ( default task-8) Adding roles from UserGroupAdapter service (JMSUserGroupAdapter) 07:28:37,732 DEBUG [org.kie.server.services.jbpm.security.ElytronUserGroupCallbackImpl] ( default task-8) Adding roles from UserGroupAdapter service (TomcatUserGroupAdapter) 07:28:37,732 DEBUG [org.kie.server.services.jbpm.security.ElytronUserGroupCallbackImpl] ( default task-8) Adding roles from UserGroupAdapter service (ElytronUserGroupAdapter) 07:28:37,732 DEBUG [org.kie.server.services.jbpm.security.ElytronUserGroupAdapter] ( default task-8) Identifier Elytron as ceeuser 07:28:37,732 TRACE [org.wildfly.security] ( default task-8) Principal mapping: [ceeuser], pre-realm rewritten: [ceeuser], realm name: [KeycloakOIDCRealm], post realm rewritten: [ceeuser], realm rewritten: [ceeuser] 07:28:37,738 DEBUG [org.jbpm.runtime.manager.impl.error.ExecutionErrorHandlerImpl] ( default task-8) Task instance TaskImpl [id=5, name=Task] is being executed 07:28:37,746 WARN [org.jbpm.services.task.persistence.TaskTransactionInterceptor] ( default task-8) Could not commit session: org.jbpm.services.task.exception.PermissionDeniedException: User '[UserImpl:' ceeuser ']' does not have permissions to execute operation 'Claim' on task id 5   and task status is still Ready. $ curl -X GET -k "https: //pam-kieserver-op2.apps.hmiura4.lab.rdu2.cee.redhat.com/services/ rest /server/containers/case03189791/tasks/5" -H "accept: application/json" -u padmin:password { "task-id" : 5, "task-priority" : 0, "task-name" : "Task" , "task-subject" : "", " task-description " : " ", " task-type " : null , " task-form " : " Task ", " task-status " : " Ready ", " task-actual-owner " : " ", " task-created-by " : " ", " task-created-on" : { "java.util.Date" : 1649316321977 } , "task-activation-time" : { "java.util.Date" : 1649316321977 }, "task-expiration-time" : null , "task-skippable" : false , "task-workitem-id" : 5, "task-process-instance-id" : 5, "task-parent-id" : -1, "task-process-id" : "case03189791.proc1" , "task-container-id" : "case03189791" , "sla-compliance" : null , "sla-due-date" : null , "task-pot-owners" : null , "task-excl-owners" : null , "task-business-admins" : null , "task-input-data" : null , "task-output-data" : null , "correlation-key" : null , "process-type" : null }$   Here are my test environment. please feel free to use it. OCP console : https://console-openshift-console.apps.hmiura4.lab.rdu2.cee.redhat.com/ (kubeadmin/jRRWX-4bpfX-LdERa-L5wkb) RH-SSO console: https://rhsso.apps.hmiura4.lab.rdu2.cee.redhat.com/auth/admin (admin/adminadmin) Controller : https://pam-rhpamcentrmon-op2.apps.hmiura4.lab.rdu2.cee.redhat.com/ (adminuser/password) login ocp from command line(namespace is op2): oc4 login -u=kubeadmin -p=jRRWX-4bpfX-LdERa-L5wkb --server= https://api.apps.hmiura4.lab.rdu2.cee.redhat.com:6443/ --insecure-skip-tls-verify I'll attach my kjar, kieapp yaml and server.log to the case. I also tested the same process in local env without rh-sso. I created local users with the following cli commands. /subsystem=elytron/filesystem-realm=ApplicationRealm:add-identity(identity=padmin) /subsystem=elytron/filesystem-realm=ApplicationRealm:set-password(identity=padmin, clear={password= "password" }) /subsystem=elytron/filesystem-realm=ApplicationRealm:add-identity-attribute(identity=padmin, name=role, value=[ "kie-process-admin" , "kie-server" , "Administrators" ]) /subsystem=elytron/filesystem-realm=ApplicationRealm:add-identity(identity=ceeuser) /subsystem=elytron/filesystem-realm=ApplicationRealm:set-password(identity=ceeuser, clear={password= "password" }) /subsystem=elytron/filesystem-realm=ApplicationRealm:add-identity-attribute(identity=ceeuser, name=role, value=[ "cee" , "kie-server" ]) In this env, claim works as expected when system property org.kie.server.bypass.auth.user is set to true.