3377062 - AS Java does not start after changing the UME ABAP client number

After changing the UME ABAP client number in the AS Java destination UMEBackendConnection, the system does not start anymore with the error below in the std_server0.out trace:

  Service [com.sap.security.core.ume.service] start ================= ERROR ================= 
  CSN Component [BC-JAS-SEC-UME], DC Name [sap.com/com.sap.security.core.ume.service]
com.sap.engine.frame.ServiceException: Start of UME service failed. Check help topic "Start of UME Service Failed". Technical details: Cannot find first configured anonymous user: J2EE_GST_<SID>: USER_AUTH_FAILED: User account for logonid "J2EE_GST_<SID>" not found!
    at com.sap.security.core.server.ume.service.UMEServiceFrame.start(UMEServiceFrame.java:466)
    at com.sap.engine.frame.ApplicationFrameAdaptor.start(ApplicationFrameAdaptor.java:31)
    at com.sap.engine.core.service630.container.ServiceRunner.startFrame(ServiceRunner.java:165)
    at com.sap.engine.core.service630.container.ServiceRunner.startService(ServiceRunner.java:118)
    at com.sap.engine.core.service630.container.ServiceRunner.run(ServiceRunner.java:65)
    at com.sap.engine.frame.core.thread.Task.run(Task.java:73)
    at com.sap.engine.core.thread.impl5.SingleThread.execute(SingleThread.java:178)
    at com.sap.engine.core.thread.impl5.SingleThread.run(SingleThread.java:316)
Caused by: com.sap.security.api.UMException: Cannot find first configured anonymous user: J2EE_GST_<SID>: USER_AUTH_FAILED: User account for logonid "J2EE_GST_<SID>" not found!
    at com.sap.security.core.logon.imp.AnonymousUser.initialize(AnonymousUser.java:111)
    at com.sap.security.core.logon.imp.AnonymousUser.getAnonymousUser(AnonymousUser.java:219)
    at com.sap.security.core.server.ume.service.UMEServiceFrame.createDefaultUsers(UMEServiceFrame.java:602)
    at com.sap.security.core.server.ume.service.UMEServiceFrame.start(UMEServiceFrame.java:359)
    ... 7 more
Caused by: com.sap.security.api.NoSuchUserException: USER_AUTH_FAILED: User account for logonid "J2EE_GST_<SID>" not found!
    at com.sap.security.core.imp.UserFactory.getUserByLogonID(UserFactory.java:1384)
    at com.sap.security.core.imp.UserFactory.getUserByLogonID(UserFactory.java:1401)
    at com.sap.security.core.imp.UserFactory.getUserByLogonID(UserFactory.java:1459)
    at com.sap.security.core.logon.imp.AnonymousUser.initialize(AnonymousUser.java:104)
    ... 10 more
Caused by: com.sap.security.api.NoSuchUserAccountException: USER_AUTH_FAILED: User account for logonid "J2EE_GST_<SID>" not found!
    at com.sap.security.core.imp.AbstractUserAccount.<init>(AbstractUserAccount.java:458)
    at com.sap.security.core.imp.DBTextFileUserAccount.<init>(DBTextFileUserAccount.java:44)
    at com.sap.security.core.imp.UserAccountFactory.getReadonlyUserAccountByLogonId(UserAccountFactory.java:614)
    at com.sap.security.core.imp.UserFactory.getUserByLogonID(UserFactory.java:1367)
    ... 13 more
Caused by: com.sap.security.core.persistence.datasource.PersistenceException: User account for logonid "J2EE_GST_<SID>" not found!
    ... 17 more

SAP NetWeaver Application Server for Java

system does not start guest j2ee_gst abap ume datasource client change solution manage configuration diagnostics agent user management engine gst , KBA , BC-JAS-SEC-UME , User Management Engine , Problem