it is not an error in se ...
DB2 vs. RACF ... does make a little/no difference who denied <access>
You/somebody is just trying to do something he is not authorized
contact Your support group to investigate about the proper authorizations
When I tell somebody to RTFM or STFW I usually have the page open in another tab/window of my browser,
so that I am sure that the information requested can be reached with a very small effort