I am preparing our software for the cross client reports (which I hope will be available very soon), and currently i'm testing the software with cross client set to false but the rest of the software is already ready for data of multiple accounts in 1 report.
For synchronisation purposes I want to retrieve all objecst by report, in adgroup, keyword, ad, placement, etc. I can use the ExternalCustomerId column to retrieve the account ID for the current record. But when I use this column in the campaign negative keywords report I get an exception that this column isn't available (ReportDefinitionError.INVALID_FIELD_NAME_FOR_REPORT @ ; trigger:'ExternalCustomerId')
Why isn't this field available? According to the documentation this field should be available in every report. For now the problem isn't that big, but when crossclient becomes available I really need this column!