To configure information protection scanner in the Microsoft Purview portal or Microsoft Purview compliance portal:

1. Sign in using one of the following roles:

• Compliance Administrator
• Compliance Data Administrator
• Security Administrator
• Organization Management

Ensure the user who is using to create scanner has above roles, otherwise you may get above error. For more information you can refer to the below documents:

• https://learn.microsoft.com/en-us/purview/deploy-scanner-configure-install?tabs=azure-portal-only#configure-the-scanner-settings

• https://learn.microsoft.com/en-us/purview/deploy-scanner-prereqs

• https://learn.microsoft.com/en-gb/answers/questions/2112530/microsoft-purview-error-when-create-information-pr