To obtain OBC certificates from both Delhi and Uttar Pradesh simultaneously, follow these steps:

1. Check Domicile Requirements:

- Ensure you meet the domicile requirements for both states.

2. Gather Required Documents:

- Collect documents proving your residency in both states, such as utility bills, voter ID, or any government-issued ID with your address.

3. Application for OBC Certificate in Delhi:

- Visit the Delhi Revenue Department's website or local SDM office.

- Fill out the application form and submit required documents, including proof of continuous residence since 1993 and family income proof.

4. Application for OBC Certificate in Uttar Pradesh:

- Visit the local authority in Uttar Pradesh that issues OBC certificates.

- Complete the application form and provide necessary documents, including proof of residence and income.

5. Verification Process:

- Both states will verify your application and documents. This may take a few weeks.

6. Receive Certificates:

- Upon successful verification, you will receive OBC certificates from both states.

Ensure to comply with any specific guidelines or requirements from each state's issuing authority.