Thats the issue Keletso. You should not be using <SID>ADM here 
.
Login to the configtool->switch to the configuration editor
mode->configuration->cluster_data->server-> cfg> services->
Propertysheet com.sap.security.core.ume.service
Check the below values:
->ume.persistence.data_source_configuration=
dataSourceConfiguration_abap.xml
->ume.login.guest_user.uniqueids : J2EE_GUEST
->ume.r3.connection.master.client :
< Backend client to which the j2ee has to be connected >
->ume.r3.connection.master.msghost
->ume.r3.connection.master.r3name :
->ume.r3.connection.master.user :SAPJSF (SAP_BC_JSF_COMMUNICATION should
be assigned in the backend)
->ume.r3.connection.master.passwd: <passwd of the sapjsf user>
restart and the issue should be solved .