Hi found this error on log of CentraSite:
[com.softwareag.centrasite.server.CentraSiteServerImpl] 2016-09-16 14:37:22,671 INFO : REQUEST: POST (HTTP/1.1), URL https://host:53313/CentraSite/CentraSite/
[com.softwareag.centrasite.server.CentraSiteServerImpl] 2016-09-16 14:37:22,674 ERROR: authenticateUser(): Administrator
com.softwareag.centrasite.security.auth.CentraSiteSecurityException: Login failed. Either userId or password does not exist INTERNAL\Administrator
#webMethods#API-Management#CentraSite