Hi Anita,
We are also facing the similar error in Custom Rule. Even we assigned the proper System Landscape to the Rule we are getting error that custom object is not present in the ABAP dictionary or object not known to the system.
What should be the issue in the custom rule ? we have created custom DDIC object in TDMS Control System and use the same object in custom rule and tried to simulate the Rule.
Please confirm that the same custom object ( Used in Custom Rule) also has to be available in source system as wel or only on TDMS Control System.
Regarrds,
Amit Thakor.