We are having leads created over and over again and assigned to Eloqua Marketing. What would be causing this to happen? In Eloqua we are recieving this error message: Id not specified in an update call
Check the Lead record history (bottom of the Lead detail page) and see which user is creating the Lead. This is likely caused by the Eloqua integration which might be configured to "always create new Lead" when it does it sync to Salesforce.