BJTU278E ROW `row_number`: JOBCLASS MUST BE 's' OR BLANK IF JOBTYPE IS 'S'.

Explanation
 The JOBCLASS field of row row_number contains
symbols other than 's' when JOBTYPE field is 'S'(STC).

System action
The row is not modified or inserted. The program
ends with RC=12.

User response
Change JOBCLASS value to 's'.