@David_Jerome ,Seems like the best practice related to not to use Direct and Session refresh was in context of Custom Attribution Models.If you are using default attribution(like First/Last touch) for marketing channel you can still use Direct/Session refresh channels.  

@IsabelMayo ,It could be an issue with the API request as well. Could you please check if your requests meets all the requirements as mentioned in the link below:https://github.com/AdobeDocs/analytics-1.4-apis/blob/master/docs/data-sources-api/methods/r_uploadDataDataSources.md If you still facing i...