Thanks all, I got the Data Cell Access Security to work now. I appeared there is a huge delay in updating the security on this level and when it becomes effective. When I was trying with a test account, refreshing and even logging off/on did not change my access after changing the security. Eventual it worked. end good, all good. thanks again.
Great news it's working! There shouldn't be any real delay in this and once the cube is saved the security should apply (from experience a log off isn't even be required). If you experience that issue again i would suggest raising a ticket with OS support.
