S213- Open Error

S213 abends the step when OPEN fails on a dataset - the dataset could not be opened for processing.

What it means

• The OPEN macro returned an error, so the program could not start reading or writing the dataset.
• S213 is a dataset/JCL problem, not a program logic problem.

Common causes

• Wrong dataset name (DSN) spelling on the DD statement.
• The dataset was deleted or was never created (catalog lookup fails).
• DCB mismatch - wrong RECFM, LRECL or BLKSIZE coded on the DD or in the program.
• Security denial (for example, RACF) on the dataset.
• DISP=OLD requested on a dataset that is already in use by another job.

How to find it

• Look for the IEC141I message in the job log - it carries the reason code for the open failure.
• The reason code tells you whether the dataset was not found, the DCB was wrong, or access was denied.
• Check the DD name, DSN and DCB against the dataset catalog entry.

How to fix it

• Verify the dataset exists with the exact DSN (use 3.4 in ISPF or LISTCAT).
• Correct the DCB attributes (RECFM, LRECL, BLKSIZE) to match the real dataset.
• Check the DISP - use DISP=SHR for shared input instead of DISP=OLD when another job may hold it.
• Confirm you have RACF read/update access to the dataset.

Example

• Wrong DSN that causes S213:-
  
  //INFILE DD DSN=MY.INPUT.FIEL,DISP=SHR
• Corrected DD with the right dataset name and matching DCB:-
  
  //INFILE DD DSN=MY.INPUT.FILE,DISP=SHR, // DCB=(RECFM=FB,LRECL=80,BLKSIZE=800)