Other A/T stuff was running, so not sure if this is all relevant to the problem:

2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26620:Event.pm:594:] $context = Fieldmapper::acq::lineitem_detail=ARRAY(0x438f718), $step = eg_copy_id, @$path = call_number
2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26871:CStoreEditor.pm:139:] editor[1|0] request en-US open-ils.cstore.direct.action_trigger.event.create <new object>
2017-09-22 10:31:08 utility03 open-ils.cstore: [INFO:26869:osrf_application.c:1075:] CALL: open-ils.cstore open-ils.cstore.direct.action_trigger.event.create {"__c":"atev","__p":[null,180328847,112,null,"now"]}
2017-09-22 10:31:08 utility03 open-ils.trigger: [WARN:26620:Application.pm:624:] open-ils.trigger.event.gather: Use of uninitialized value $context in concatenation (.) or string at /usr/local/share/perl/5.18.2/OpenILS/Application/Trigger/Event.pm line 594.
2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26620:Event.pm:594:] $context = , $step = call_number, @$path =

before the second:

2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26871:CStoreEditor.pm:139:] editor[1|0] request en-US open-ils.cstore.direct.action_trigger.event.create <new object>
2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26620:Event.pm:594:] $context = Fieldmapper::acq::purchase_order=ARRAY(0x436eb90), $step = lineitems, @$path = lineitem_details owning_lib
2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26620:Event.pm:594:] $context = Fieldmapper::acq::lineitem=ARRAY(0x438cc20), $step = lineitem_details, @$path = owning_lib
2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26620:Event.pm:594:] $context = Fieldmapper::acq::lineitem_detail=ARRAY(0x438f718), $step = owning_lib, @$path =
2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26620:Event.pm:594:] $context = Fieldmapper::acq::purchase_order=ARRAY(0x436eb90), $step = lineitems, @$path = lineitem_details fund
2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26620:Event.pm:594:] $context = Fieldmapper::acq::lineitem=ARRAY(0x438cc20), $step = lineitem_details, @$path = fund
2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26620:Event.pm:594:] $context = Fieldmapper::acq::lineitem_detail=ARRAY(0x438f718), $step = fund, @$path =
2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26620:Event.pm:594:] $context = Fieldmapper::acq::purchase_order=ARRAY(0x436eb90), $step = lineitems, @$path = lineitem_details location
2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26620:Event.pm:594:] $context = Fieldmapper::acq::lineitem=ARRAY(0x438cc20), $step = lineitem_details, @$path = location
2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26620:Event.pm:594:] $context = Fieldmapper::acq::lineitem_detail=ARRAY(0x438f718), $step = location, @$path =
2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26620:Event.pm:594:] $context = Fieldmapper::acq::purchase_order=ARRAY(0x436eb90), $step = lineitems, @$path = lineitem_details eg_copy_id location
2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26620:Event.pm:594:] $context = Fieldmapper::acq::lineitem=ARRAY(0x438cc20), $step = lineitem_details, @$path = eg_copy_id location
2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26620:Event.pm:594:] $context = Fieldmapper::acq::lineitem_detail=ARRAY(0x438f718), $step = eg_copy_id, @$path = location
2017-09-22 10:31:08 utility03 open-ils.trigger: [WARN:26620:Application.pm:624:] open-ils.trigger.event.fire: Use of uninitialized value $context in concatenation (.) or string at /usr/local/share/perl/5.18.2/OpenILS/Application/Trigger/Event.pm line 594.
2017-09-22 10:31:08 utility03 open-ils.trigger: [INFO:26620:Event.pm:594:] $context = , $step = location, @$path =
2017-09-22 10:31:08 utility03 open-ils.trigger: [ERR :26620:Event.pm:526:] Can't call method "class_name" on an undefined value at /usr/local/share/perl/5.18.2/OpenILS/Application/Trigger/Event.pm line 596.