Scheduled Workflow Background Process ends with warning and next wfbg could not be submitted

Hi,

Version of our system is EBS 12.2.3. We scheduled Workflow Backgroud Process for purchase order approval process. When a scheduled program ends with Warning, next program could not be submitted based on schedule.

Is there a way to submit next scheduled Workflow Background Process programs even if previous one compeletes with Warning?

One of the log message of program which completed with warning has "CONC-PLACES MESSAGE ON STACK." message.

Thanks in advance,

Yonca