When you submit a metadata deposit, you'll receive a message that says "SUCCESS - Your batch submission was successfully received." This does not mean that your deposit has been processed or that your DOIs have been successfully registered or your metadata has been updated. It simply means that your deposit has been submitted to our processing queue.
If you submit metadata using the Web Deposit Form you will receive an initial email from firstname.lastname@example.org with the subject line "Crossref WebDeposit - XML." This email contains a copy of the XML file that was created and submitted to our system. This confirms that your deposit was submitted to our system, but does not mean that it has been processed yet. The XML file is for your records only.
Whether you use the Web Deposit Form or create and submit your own XML deposits directly, once your deposit has finished processing, you will receive an email from email@example.com with the subject line "Crossref submission ID:..." and the specific submission ID number for that deposit. This email contains the Submission log for your deposit. The log will either confirm the success of your deposit or display any relevant error messages.
Please note, there can be some lag time between when you submit a metadata deposit and when it is processed by our system. This lag time can vary between several minutes and several hours depending on how large your submission file is and how busy our submission queue is at that time. If you don't receive your submission log email immediately, your deposit is likely waiting in the queue. You can confirm this by accessing our web interface at doi.crossref.org and navigating to the Submissions tab > Show System Queue sub-tab.