I am trying to perform an upsert via the Bulk API with C#.net http posts.
The upsert works fine if I use external id = "ID"
However, when I change to use a custom external id, I receive this error:
Got an unexpected error while processing BULK-API. Contact support with error ID: 375837484-3025 (-1477247585)
Is there a configuration option I need to check?
Has anyone posted xml to Salesforce with .NET integration? If so do you have any examples of the process for doing this and passing the sessionid in the session header after getting it from the login binding?
