(13657151) Internal users cannot log into REST Web Services
The default configuration for the REST Web Services will not allow internal users to log into the server. The server will return an error message including:

"formExceptions": ["Missing value for the login property"]

Workaround: Configure access to the properties of the /atg/userprofiling/InternalProfileFormHandler component in the /atg/rest/security/restSecurityConfiguration.xml configuration file for the REST server. Use the settings shown below.

<resource component="/atg/userprofiling/InternalProfileFormHandler"
          secure="true">
  <method name="handleLogin" secure="false"
          requiresSessionConfirmation="false"
          formHandlerErrorURLProperty="loginErrorURL" />
  <method name="handleLogout" secure="false"
          formHandlerErrorURLProperty="logoutErrorURL" />
  <property name="value.login" secure="false" />
  <property name="value.password" secure="false" />
  <property name="loginErrorURL" secure="false" />
  <property name="logoutErrorURL" secure="false" />
</resource>