IDOC status 64 not getting processed.

Hi Gurus,

      I have a problem where IDOC's with status 64 are not getting processed via background job. the IDOCs weere getting processed with the background job till today evening, but suddenly no changes were made and the processing of IDOC's with status 64 has stopped and they keep filling up, when i checked the log of the Background job it says finished, and the log has the following information,

17.09.2009 19:05:23 Job started                                                                   00           516          S

17.09.2009 19:05:23 Step 001 started (program RBDAPP01, variant POS_IDOCS, user ID SAPAUDIT)      00           550          S

17.09.2009 19:05:25 No data could be selected.                                                    B1           083          I

17.09.2009 19:05:25 Job finished                                                                  00           517          S

Kindly advise on this.

Regards,

Riaz.