Hi, I just worked this out today and thought others might find it useful in two ways:
This specific example shows how to link two predecessors to a successor task. For more than two predecessors, just add more following the same format. I've highlighted the bits you need to edit in yellow .
Applying this API query structure allows you to write other collection type sub-objects within another object. E.g. Adding PTO against a User etc.
https:// yourhostname .my.workfront.com/attask/api/v9.0/TASK?apiKey= InsertYourAPIKey &method=PUT&updates=[{"ID":" InsertSuccessorTaskID ","predecessors":[{"objCode":"PRED","predecessorID":" InsertPredeccessorTaskAID ","predecessorType":"fs"},{"objCode":"PRED","predecessorID":" InsertPredeccessorTaskBID ","predecessorType":"fs"}]}] Hope this helps someone. We really need a master place to store this stuff..... Regards, David Cornwell