Enabling Assets, enabling Person Accounts, and ensuring the email deliverability access level is set to "All email" are three tasks that must be completed or checked before installing the Omnistudio Package. Assets are records that represent products or services sold to customers. Assets must be enabled to use some features of Omnistudio, such as FlexCards or DataRaptors. Person Accounts are records that store information about individual people who are not associated with a business account. Person Accounts must be enabled to use some features of Omnistudio, such as OmniScripts or DataPacks. Email deliverability access level determines what types of email can be sent from Salesforce. The email deliverability access level must be set to "All email" to install Omnistudio Package successfully. Reference: https://help.salesforce.com/s/articleView?id=psc_admin_setup_omnistudio.htm&type=5&language=en_US