Recently USCIS has mistakenly sent out many receipt notices for applications (I-140’s, I-129’s, etc.) in which there was a request for evidence embedded in the actual receipt notice. Usually USCIS will send out a separate notice if they feel that they need additional documents. According to USCIS this was a mistake and those requests can be ignored. If they require additional evidence they will send out a separate notice. Of course you should always contact your attorney about such matters before doing anything.
Please remember, as always, this blog does not offer legal advice. If you need legal advice, consult with a lawyer instead of a blog. Thank you.