Ok. Thanks for the information. I’ll look into how loading might be accomplished with multiple sheets / multiple passes, and also what the xml structure looks like in the logs. I have already been considering if it is possible to convert the data into xml from excel, and then load the new workorders via another method eg SoapUI client, since loading data that way does create a new record successfully, including the workorder and the multiple child objects. I haven’t investigated that in any detail yet, though. Excel loading from mxloader seems simpler if I can find an acceptable configuration.