Answer
Use the show log messages | match ais command to view the JMB creation status and readiness for file retrieval by Service Now.
You should get an output similar to the following:
AIS_PROCESSING: AI-Scripts Commit script completed
AIS_DATA_AVAILABLE: JMB #1 generation initiated for eventID=998
AIS_PROCESSING: JMB #1 triggered by match with: interval_based_intelligence_event
AIS_DATA_AVAILABLE: WARNING: Cannot update FIFO on re1
AIS_DATA_AVAILABLE: WARNING: Cannot update FIFO on re1
AIS_PROCESSING: JMB #1 is creating the ESI batch file
AIS_PROCESSING: JMB #1 finished attachment: /var/tmp/M10i-r012-998-20150716-041856_ais_attach_2_cfg_xml size=8481
AIS_PROCESSING: JMB #1 finished attachment: /var/tmp/M10i-r012-998-20150716-041856_ais_attach_3_shd_xml size=4244
AIS_PROCESSING: JMB #1 finished attachment: /var/tmp/M10i-r012-998-20150716-041856_ais_attach_4_ver_xml size=9060
AIS_PROCESSING: JMB #1 finished the JMB file
AIS_PROCESSING: Preparing to complete JMB file processing on Master RE
AIS_DATA_AVAILABLE: To be Transferred : JMB ready for upload /var/tmp/M10i-r012_2
For more information about Service Now, see the Service Now User Guide.