what is this program UJA_REFRESH_DIM_CACHE?
when exactly useful?
One more question, can i delete xml file of ACCOUNT dim in background(ujfs)? then how to recreate it?
Just to check this (bit tedious process):
Could you please add a new 'account type' dimension to your appset and see if you are able to process the dimension without any issues.
If so, you could delete the 'ACCOUNT' dimension which is causing the issue after assigning the new account type dimension to your application.
Note: You cannot assign more than one account type dimension to your application. so you deassign and assign the new one in one single step and click on the 'modify application.