Hello, I have restricted a *particular item type (say, Textbook)* to a *particular patron category (say, Project Fellow)* for not checking out under circulation and fine rules in Koha. While checking out a book under the same item type to the same patron category, it is not showing any warning message but allows checkout with the same due date and checkout date. I have also checked Koha System preferences (Circulation) but have not found any such option. Currently, I am using Koha 21.05 in Debian 11 OS. Is there an option to show such a warning message to enable a staff member while doing the said job? Regards, Dr. Sambhunath Sahoo / डॉ सम्भुनाथ साहु Assistant Librarian / सहायक पुस्तकालयाध्यक्ष, Central Library / केन्द्रीय पुस्तकालय, 4th Floor, Administrative Building / चौथा मंजिल, प्रशासनिक भवन Indian Institute of Technology Bhubaneswar / भारतीय प्रौद्योगिकी संस्थान भुवनेश्वर Argul, Khurda, Odisha / आरगुल, खुर्दा, ओड़िशा, 752050 (India) Mobile: 7978949882 Phone: +91-674-713-8756 (O) E-Mail: sambhu@iitbbs.ac.in sambhumlis@gmail.com *ORCID ID:* 0000-0001-9162-879X *Researcher ID:* K-4446-2018 *Scopus ID:* 57222542160