1. Check the latest periodical catalogue regularly: the periodical catalogue will be updated regularly. If an article is found to have been withdrawn, the unit can learn about it through the information in the catalogue.

2. Pay attention to the periodical official website: Periodicals generally publish the information of withdrawing manuscripts in official website, and units can obtain this information through the website of attention.

3. Subscribe to relevant email notifications: Some journals will send email notifications to subscribers, including important information such as articles being rejected, and units can obtain relevant information by subscribing to these emails.

4. Retrieval tools: The company can retrieve the relevant information of the withdrawn articles through various retrieval tools, such as Google Academic and PubMed, including the reasons and time of withdrawal.

It should be noted that different units may deal with the rejection of SCI journals in different ways, but generally speaking, units will take corresponding measures according to specific circumstances, such as notifying the author, adjusting the academic evaluation of the author in the unit, and taking disciplinary action against the author.