EP7.3 Custom logon Page changes

Dear Experts,

I downloaded standard WAR file,

from /j2ee/cluster/apps/sap.com/com.sap.security.core.logon/servlet_jsp/logon_ui_resources/sap.com~tc~sec~ume~logon~ui.war

Created EAR for the same.

My War file name is : CUST_LOGON_WAR

My Ear file name is  : CUST_LOGON_EAR

I changed both .xml file as required and kept alias as /Custom_Logon.

Now i changed the alias

ume.logon.application.ui_resources_alias=/custom_logon

and restarted server. New logon page din't came. There is not error message also, i reverted back, and got my standard page.

My Queston is, when we create WAR and EAR and change the alias in NWA, do we require to change Authscheme.xml also?

I dint modified Authscheme.xml, it was as is.

Second question , we deploy war and ear , and also change Authscheme by removing entry and keep custom_EAR name, after that do we require to change alias

ume.logon.application.ui_resources_alias=/custom_logon in NWA?

just by changing alias will call new custome page or do we require to chage authenscheme.

and

just by chaning authscheme, do we require to change alias?

or both are required.?