I suppose you made this screenshot, when you tried to re-create the model, the system gives you a warning that "the following entries exist and should be cleaned up"? Because then you do not have the ok in the last column (what Suraj refers to).
According the screenshot your logical system name is "ECR"?
Now I wonder what this means for the logical system name / RFC connection name / business system in the target system? Your business system is assigned to a RFC connection. But this one for sure is not named "ECR". And if the name of the logical system and the RFC connection are not the same? Probably this all just goes into nirwana...
Brgds
Juergen