SAP Message RSM702 - Cannot activate job &1 (return code &2)

Diagnosis
Saving job &V1& failed with return code &V2&.

System Response
The return codes have the following definitions:
1 = cant_start_immediate
2 = invalid_startdate
3 = jobname_missing
4 = job_close_failed
5 = job_nosteps
6 = job_notex
7 = lock_failed
8 = invalid_target
9 = OTHERS

Procedure
This depends on the nature of the error.