fix missing DLQ error when omitted. Closes #659
fix missing DLQ error when omitted. Closes #659

from @visciang

ianrtracey/apex,llun/apex,apex/apex,ianrtracey/apex,apex/apex,ianrtracey/apex,apex/apex,llun/apex,llun/apex,ianrtracey/apex,apex/apex,ianrtracey/apex,apex/apex,apex/apex,llun/apex,ianrtracey/apex,llun/apex,apex/apex,llun/apex