Hi Shweta,
Thank you for contacting the Microsoft Community.
I understand how important it is for you to schedule your SC-900 exam on your preferred date and time using a voucher. Allow me to assist you with this matter.
To help us verify and locate your account, please send the requested information via private message.
Meanwhile, if you are using a company discount and are an active ESI Learner (part of an organization affiliated with the Enterprise Skills Initiative), please reach out to the ESI Support Team. They manage all concerns for active ESI Learners, including exam-related issues. You can find their contact information in the private message.
Additionally, please be advised that the lack of available dates may be due to high demand or scheduling constraints. For further assistance, please reach out to Pearson VUE Help and Support directly for better assistance. They will be able to provide more information or help you find an alternative solution. For the best experience, please consider using their phone support or chat options, which provide real-time assistance.
To ensure we can assist you effectively, please let us know if you need any additional information.
I look forward to your response. Please note that if no response is received after two business days, the case will be closed and locked. After the case is locked, we will no longer be able to respond, even through Private Message. Thank you.