queryDef is configured to return maximum 10000.you have two options:1. Break your query in multiple parts by providing some range or filters2. write one custom sql script for your query and execute that from your js activity.

Hi Roel,it is happening because Maybe you are using nms:recipient as your target mapping in delivery.Switch that to nms:service and select the correct twitter account and it will go away.if this is not the cause than can you post your workflow here? may be I can help you.