Copy Job: Using variable library prevents editing mappings

PanuO What I see on your screenshot is a clear indication that some of the object IDs are incorrect. You need to double check all the IDs that you have in your configuration. Another possible scenario is the IDs could be correct but you don't have access to those objects. Sometimes the error messages are not well refined.

In your original question, though I just noticed that on a screenshot you reference Tables/dbo/project/projects.csv'  I don't think this is correct. If project.csv is a file, it should be in the Files path, not Tables. Please double check that. If you wrote those paths manually you might have made mistakes. I suggest you go through the Copy Job creation again and use the browsing in the UI to find all the proper objects and then find their locations if you need to store them in the Variables Library. This is a downsode of parameterization: if you make a mistake in your parameter value, your workload will fail. Need to double check and test.

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