Configuring Autocomplete on the Login Field

Procedure

1. Find the file named login.tag in the following directory: .
   yacceleratorstorefront/web/webroot/WEB-INF/tags/responsive/user/
2. Edit the login.tag file and locate the loginForm commandName.
3. In that section, add the following line:

   <formElemnt:formInputBox idKey="j_username" labelKey="login.email" path="j_username" mandatory="true" autocomplete="off"/>

4. Save the file and refresh the page.
   The autocomplete feature for the username field is now disabled.

   However, if you wish to enable the autocomplete feature for the username field, set the autocomplete parameter to "on".

https://help.sap.com/viewer/4c33bf189ab9409e84e589295c36d96e/1905/en-US/e3bea983bb5d468a9b9f8fbef754362d.html