3478405 - Error 401 while sending test message to CPI tenant

You received error 401 while sending test message to CPI tenant, eg; https://xxxxxx.it-cpi002-rt.cfapps.ap11.hana.ondemand.com/http/Test_Connection

1#com.sap.it.security.multicloud.authentication#na#na#na#na#Client error while obtaining access token from XSUAA (https://xxxxx.authentication.cert.ap11.hana.ondemand.com/oauth/token): [401 UNAUTHORIZED] 401 Unauthorized: [no body],

com.sap.it.security.multicloud.authentication#na#na#na#na#Basic Authentication with IDP user failed: XSUAA could not authenticate user xxx@abc.com#

Basic Authentication with IDP user failed: XSUAA could not authenticate user , KBA , BC-CP-CF-SEC-IAM , UAA, Authentication, Authorization, Trust Mgmnt , LOD-HCI-PI-RT , Integration Runtime , Problem