Description
		
		Enables emulation of UCC11, the JCL job re-start functionality. This environment variable affects data set disposition processing in the following ways: 
		
		
		  - If UCC11 is enabled, a data set disposition of 
			 NEW is accepted even if the data set already exists. The features that this environment variable enables are:
		  
Properties:
 
		
		
		  
			 - Y
			 
- JCL job re-start functionality is enabled. When restarting a job with 
				DISP=(NEW,CATLG), datasets will not result in job failure due to the dataset already being cataloged.
			 
- M
			 
- 
				On a restart a catalogued a dataset is presumed to have an initial disposition of 
				  MOD rather than 
				  NEW. As a result, any new data is appended to the existing dataset. 
				 
- N
			 
- JCL job re-start functionality is disabled.