Activate Human Resource Portal plugin experienced lot of errors in the log and not able to access corresponding Service Portal.Issue <!-- div.margin { padding: 10px 40px 40px 30px; } table.tocTable { border: 1px solid; border-color: #e0e0e0; background-color: #fff; } .title { color: #d1232b; font-weight: normal; font-size: 28px; } h1 { color: #d1232b; font-weight: normal; font-size: 21px; margin-bottom: 5px; border-bottom-width: 2px; border-bottom-style: solid; border-bottom-color: #cccccc; } h2 { color: #646464; font-weight: bold; font-size: 18px; } h3 { color: #000000; font-weight: bold; font-size: 16px; } h4 { color: #666666; font-weight: bold; font-size: 15px; } h5 { color: #000000; font-weight: bold; font-size: 13px; } h6 { color: #000000; font-weight: bold; font-size:14px; } ul, ol { margin-left: 0; list-style-position: outside; } --> Symptoms After installing Employee Service Center [com.sn_hr_service_portal] , several errors are reported and User's are not able to access Service Portal of Employee Service Center. Release Current version : Madrid Previous version : Istanbul , Jakarta Environment N/A Cause In the affected instance, following plugins related to Human Resource are installed Employee Service Center [com.sn_hr_service_portal] Human Resources Scoped App: Core [com.sn_hr_core] Human Resources Application: Core [com.snc.hr.core] There are two different versions of Human Resource available [ Non Scoped - V1 , Scoped -V2 ] The first two plugins are the HR V2 scoped plugins and are meant to work together, namely Employee Service Center and Human Resources Scoped App: Core. The last one, Human Resources Application: Core, is the non-scoped V1 Core HR application (Helsinki and earlier). It does not work with scoped Employee Service Center portal. Instead, it is meant to work with the non-scoped portal, Human Resources Application: Service Portal [com.snc.hr.service_portal]. Resolution In the affected instance HR cases are in hr_case, which means customer are using the V1 Human Core application. In this case, customer should use corresponding portal. Note : Customer support would need to install the V1 portal: Human Resources Application: Service Portal. After installation, please navigate to /hrsp, to access the appropriate portal. Additional Information If customer intends to use the V2 portal, since customer already have both the scoped core and portal plugins installed. Simply navigate to /esc to view the ESC portal. Regarding the sn_hr_sp_m2m_portal_catalog error is caused by a leftover file that shouldn't be there.