An error occurred whilst starting a single user development region. A run-time lock could not be acquired due to the error
                  extended-file-status. The most likely reason is that the directory in which CICS Option creates the lock file,\system, is read-only.
                  
            
            
               
               
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                  System action:
                  
               
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                  The single user region will not initialize successfully.
                  
               
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                  Resolution:
                  
               
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                  Ensure that the directory \system is not read-only.
                  
               
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                  Destination:
                  
               
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                  Console and standard error
                  
               
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                  Module:
                  
               
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                  dfheini1