There is indeed relaxation in the age limit for reserved category candidates in the IBPS RRB PO Exam. The Institute of Banking Personnel Selection (IBPS) is responsible for conducting the recruitment process for Regional Rural Banks (RRBs) across the country. The age limit criteria vary for different categories of candidates, including the reserved category candidates.

Here are the details regarding the relaxation in age limit for reserved category candidates in the IBPS RRB PO Exam:

1. SC/ST Category:
- The minimum age limit for SC/ST category candidates is 21 years.
- The maximum age limit for SC/ST category candidates is 35 years.
- There is a relaxation of 5 years in the upper age limit for SC/ST candidates.

2. OBC Category:
- The minimum age limit for OBC category candidates is 21 years.
- The maximum age limit for OBC category candidates is 33 years.
- There is a relaxation of 3 years in the upper age limit for OBC candidates.

3. PWD Category:
- For candidates under the PWD (Persons with Disabilities) category, the relaxation in age limit varies based on the type of disability.
- The maximum age limit with relaxation for PWD candidates is as follows:
- SC/ST category: 45 years
- OBC category: 43 years
- General category: 40 years

4. Ex-Servicemen Category:
- For candidates who have served in the Armed Forces, the relaxation in age limit is provided based on their length of service.
- The maximum age limit with relaxation for Ex-Servicemen candidates is as follows:
- 5 years for candidates who have completed at least 6 months of continuous service in the military.
- The period of service plus 3 years for candidates belonging to the SC/ST category.

It is important to note that the age relaxation provided to reserved category candidates is subject to the submission of relevant certificates and documents as proof of category during the recruitment process.

Overall, reserved category candidates are eligible for relaxation in the upper age limit in the IBPS RRB PO Exam. This allows them to have a fair chance at participating in the recruitment process and securing a position in the Regional Rural Banks.