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You can only create one Microsoft Purview account per tenant. If your organization already has a Microsoft Purview account, you will not be able to create a new Microsoft Purview account unless your organization already had multiple accounts and is still under the the pre-existing quota. For more information, see the FAQ.
In case, if you try to create a secondary Microsoft Purview account, you will see the below error message: You already have a tenant-level Microsoft Purview account chepra to achieve enterprise data governance. If you want to create an additional one, please reach out to Microsoft support.
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For more details, refer to Create a Microsoft Purview (formerly Azure Purview) account.
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