Obviously, the account trying to write into that directory, lacks permissions.
Probably, the owner of /u01/EBSTWO/apps/apps_st is not the owner you try to move the file with. Try to do the opposite; as the owner of that directory, READ the file from its source location, and write into the directory which he owns himself. The read permissions are normally given more than the write permissions, and if you can login as BOTH account, you will have more success if you chose the owner of the target directory, which probably is not the owner of the source file, but that should be OK as that owner more likely has got read rights to read the source file.
In addition to ownership you may also want to verify correct directory write permissions of the target directory. You may also want to check the output of the "mount" command to see if the target directory is a remote volume in which case the connection protocol may overrule file system permissions.