Dear Konstantin,
did you check the "Data Transfer Monitor"?
Do you have any error message for the DDIC-tables there?
Yes, I checked DTM, and could not find any error message.
What do the details of the cancellation errors in SM21 state? Do this give you a hint?
You should also check the other messages in SM21, they seem all related to the SLT replication.
Yes, I checked the other messages too. But not given much information abt the errro
Just for the understanding: do you have only this one schema running or is there another schema active?
We have only one schema in active "SAP_CRM2"
Regards
Krishna