Honestly, hard to describe initially, mainly due to fact that DB is on clients side and personally I have no access, Ill give more info in a bit, basically from what I gather is that after giving the grant directly to attunity user - it vanishes after a minute or so, now there's many reasons I can think of - but as @Shai_E said, most likely its not required and might be disappearing because it might not be a multitenant db.
To add on, is there a way to force attunity to ignore some errors or thats unavoidable?
