STMS: Common transport errors

If imported with return code 4:

- Generation of program, columns or row are missing .


If imported with return code 8 : 

- Could be syntax error
- Program generation error
- Dictionary activation error or method execution error

If imported with return code 12 : 

- Indicates Import Cancelled
- Program cancelled due to job
- Import cancelled due to object missing
- Import cancelled due to object not active
-Shared FS: /usr/sap/trans is not mounted in all servers

If imported with return code 18 : 

- Indicates Import Cancelled
- Due to system down while import
- Due to user expired during import
- Due to insufficient roles or authorization