Is there any way to clear the

externalid

field via WebServices? Adding it to

nullFieldList

doesn't seem to be working, nor does setting it as a blank string.

@michoel not sure about webservices, but if it isn't possible by webservices, you could: - Consider generating an externalid with invalid format, so you can detect a valid external, if that doesn't work: - Create a server user event to do the update that trigger on webservices context, if that doesn't work: - Use a server user event to run a csv import job.

Thanks Luc. I actually ended up doing something very similar to your first suggestion.