Hello, I just noticed that it isn't possible to create a user with the old keycloak admin client (2.5.5.Final) on the Keycloak Server (3.3.0.CR2). See the exception below. It turns out that the recently introduced field "notBefore" on UserRepresentation in KEYCLOAK-5293 is the cause. Other representations like ClientRepresentation (unknown field "access") and ProviderRepresentation (unknown field "order") have the same problem. How about adding... @JsonIgnoreProperties(ignoreUnknown = true) ... to all representations (org.keycloak.representations.idm.*) to stay backwards compatible for old clients? I gave this a spin locally (by patching the keycloak-core jar) and it is working fine. Cheers, Thomas javax.ws.rs.client.ResponseProcessingException: javax.ws.rs.ProcessingException: com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "notBefore" (class org.keycloak.representations.idm.UserRepresentation), not marked as ignorable (24 known properties: "disableableCredentialTypes", "enabled", "emailVerified", "origin", "self", "applicationRoles", "createdTimestamp", "clientRoles", "groups", "username", "totp", "id", "email", "federationLink", "serviceAccountClientId", "lastName", "clientConsents", "socialLinks", "realmRoles", "attributes", "firstName", "credentials", "requiredActions", "federatedIdentities"]) at [Source: org.apache.http.conn.EofSensorInputStream@2663e964; line: 1, column: 308] (through reference chain: java.util.ArrayList[0]->org.keycloak.representations.idm. UserRepresentation["notBefore"]) at org.jboss.resteasy.client.jaxrs.internal.ClientInvocation.extractResult( ClientInvocation.java:141) at org.jboss.resteasy.client.jaxrs.internal.proxy.extractors. BodyEntityExtractor.extractEntity(BodyEntityExtractor.java:59) at org.jboss.resteasy.client.jaxrs.internal.proxy.ClientInvoker.invoke( ClientInvoker.java:104) at org.jboss.resteasy.client.jaxrs.internal.proxy.ClientProxy.invoke( ClientProxy.java:64) at com.sun.proxy.$Proxy32.search(Unknown Source) _______________________________________________ keycloak-dev mailing list keycloak-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/keycloak-dev