KS3G390E [module_name] was unable to add group name [group_name]

module_name

Explanation 			 				The specified new group_name could not be
added because 				a group with that name already exists. 			 		

System action
 			The new group is not added. 		

User response
 			 				Specify a different group name for the dataset group 				being created. 			 		