$batch and idempotent service together, possible?

Hi,

with idempotent service (cf. Settings for Idempotent Services - SAP NetWeaver Gateway - SAP Library) one can ensure that a change operation is done once and only once even if it is submitted more than once.

But how relates this to $batch and $batch change sets (cf. $batch Processing - SAP NetWeaver Gateway - SAP Library)?

I assume I would need the idempotent headers per change set, but how would I do this?

Or can I set the idempontent headers only for the whole batch?

Thank you for some hints on how to combine these two features!

Regards,

Wolfgang