externalSystemId

Hi, we have been retrieving reports from Eloqua without any issue, but since a week ago, if we call:

https://secure.p04.eloqua.com/API/Bulk/2.0/activities/exports

with the usual fields and filters, the response we get from the request is:

{'failures': [{'field': 'crmAccountIdField', 'constraint': 'Is required.'}, {'field': 'externalSystemId', 'constraint': 'Is required.'}]}

how to specify these columns? what value should we put? we didn't find anything in the docs

Thanks!