For CLAT, a central government issued reservation form is typically required. This is because CLAT is a national-level entrance exam and follows specific guidelines for reservation categories.

While a state-issued reservation form might be accepted in some cases, it's highly recommended to obtain a central government issued form to avoid any potential issues. This form can usually be obtained from the respective state's social justice department or a designated government office.

Regarding the validity of your 2022 state reservation form: While it might be valid for three years in some contexts, it's best to check the specific requirements for CLAT. The eligibility criteria and document requirements can change from year to year. It's advisable to obtain a new central government issued reservation form for the current year to ensure that your application meets all the necessary criteria.

For more information about CLAT you can go through the link attached below.

https://law.careers360.com/exams/clat