I just submitted another request ([Issue 3831](https://support.gluu.org/identity-management/3831/scim-user-extension-filter-doesnt-work/)) with a similar issue. This one does the search but also sends back a 400 error. It's a "attribute present" filter defined in the SCIM spec. Using SCIM endpoints, I can query on the existence of an attribute of the user:{server}/identity/seam/resource/restv1/scim/v2/Users/?filter=familyName%20pr. I get a 400 error with the message: ``` { "schemas": [ "urn:ietf:params:scim:api:messages:2.0:Error" ], "status": "400", "scimType": "invalidFilter", "detail": "Unexpected processing error; please check the input parameters" } ``` Log shows results are found: ``` 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] (BaseScimWebService) validateToken token = 3bf0db28-078b-4b42-872c-35ccde26b174 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] (BaseScimWebService) validateToken status = 200 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] (BaseScimWebService) validateToken entity = {"valid":true,"expires_in":22289356} 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] (BaseScimWebService) validateToken isValid = true 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] (BaseScimWebService) validateToken expires = 22289356 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] Searching users from LDAP 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] ---------- 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] ### RAW PARAMS ## 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] filter string = familyName pr 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] startIndex = 0 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] count = 100 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] sortBy = null 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] sortOrder = null 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] attributes = null 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.service.antlr.scimFilter.ScimFilterParserService] createFilter() 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.service.antlr.scimFilter.ScimFilterParserService] visitTree() 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.service.antlr.scimFilter.ScimFilterParserService] getParser() 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.service.antlr.scimFilter.MainScimFilterVisitor] visitScimFilter() 2017-03-02 21:08:15,726 INFO [oxtrust.service.antlr.scimFilter.visitor.UserFilterVisitor] UserFilterVisitor.visitATTR_PR() 2017-03-02 21:08:15,726 INFO [oxtrust.service.antlr.scimFilter.visitor.UserFilterVisitor] ##### ATTRNAME = familyName, ldapAttributeName = sn 2017-03-02 21:08:15,726 INFO [oxtrust.service.antlr.scimFilter.visitor.UserFilterVisitor] ##### expr = sn=* 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] ### CONVERTED PARAMS ## 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] parsed filter = (sn=*) 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] startIndex = 1 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] count = 100 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] sortBy = displayName 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] sortOrder = ascending 2017-03-02 21:08:15,726 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] attributes = null 2017-03-02 21:08:15,775 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] ### RESULTS INFO ## 2017-03-02 21:08:15,775 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] totalResults = 156 2017-03-02 21:08:15,775 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] itemsPerPage = 100 2017-03-02 21:08:15,775 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] startIndex = 1 2017-03-02 21:08:15,775 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] ---------- 2017-03-02 21:08:15,775 INFO [gluu.oxtrust.ws.rs.scim2.UserWebService] setting schema ``` The log otherwise doesn't show an exception.