RE: Pending Approval field on General Journal - how to get it checked?
Thanks Nitin, I've now updated the workflow event/response as you've told me. I've then updated the responses for the approval is requested/is approved events.
Workflow:

Approval is requested event:

Approval is approved event:

and tried to send a JNL for approval, but I got the message below, do you know why I'm getting it?

Many thanks for all your help,
Alejandra