Write the Error log from background Job to the Spool request

Question

Hi ,
I have a situation where in i need to capture the error log of a Z program which runs as a background job and write that log into the spool request. My Z program calls runs RSEINB00 program using the SUBMIT statement. When this Job fails the error log can be seen in SM37. But i need this error log to be sent in to a spool.
I can read the error log using the BP_JOBLOG_READ FM and can also create a spool using the RSPO_SPOOL_OPEN FM.
The problem is, when the Submit statement executes, due to internal valdation in the RSEINB00 program the program terminates. Due to this it is not able to perform the SY-SUBRC Check and thus doesn't read the log.
Can anybody suggest me how to overcome this problem. I am attaching the code for your refernece.
SUBMIT RSEINB00
       USING SELECTION-SET 'TEST2'
                       TO SAP-SPOOL
                       LIST NAME 'LOCL'
                       IMMEDIATELY space
                       KEEP IN SPOOL 'X'
       AND RETURN.
<b>If sy-subrc <> 0.</b>           
             CALL FUNCTION 'BP_JOBLOG_READ'
              EXPORTING
                CLIENT                      = SY-MANDT
                JOBCOUNT                    = i_tbtco-jobcount
                JOBLOG                      = i_tbtco-joblog
                JOBNAME                     = i_tbtco-jobname
               TABLES
                 JOBLOGTBL                   = l_joblog
             IF SY-SUBRC <> 0.
             else.
                message i002 with l_joblog-msgv1.
             ENDIF.
<b>
ENDIF.</b>
Rgds,
Kewal
P.S. : any other approach to solve this problem will be appreciated too and the points will be rewarded suitably.

Answer 1

If I select a job in SM37 and I click on "spool" I get a list with separate spool entries for each of the steps, e. g.
Programmname/Kommand   Programmtyp   Spoolliste
Z_MM_STAT_UPDATE_WERK  ABAP             1707445
ZSLEEP                 Ext. Kommando
Z_MM_STAT_UPDATE_WERK  ABAP             1707459
ZSLEEP                 Ext. Kommando
Z_MM_STAT_UPDATE_MARA  ABAP             1721423
ZSLEEP                 Ext. Kommando
Z_MM_STAT_UPDATE_WERK  ABAP             1721437
Z_MM_STAT_UPDATE_MARA  ABAP             1721446
Z_MM_STAT_UPDATE_WERK  ABAP             1721447
Z_MM_STAT_UPDATE_VKORG ABAP             1721471
ZSLEEP                 Ext. Kommando
Z_MM_STAT_UPDATE_VKORG ABAP             1721521
ZSLEEP                 Ext. Kommando
Z_MM_STAT_UPDATE_VKORG ABAP             1721816
It's in German but I'm sure you get the idea. For each Z_MM_STAT_UPDATE and variant I have a separate spool list that I can display.
Markus