An integrated threat protection solution designed to detect, investigate, and respond to cyber threats across Microsoft 365 services.
I believe your Dev Subscription do not contain Microsoft Defender for Endpoint P2
As per MS these applies to below plans
- Microsoft Defender for Endpoint Plan 2
- Microsoft 365 Defender
Reference :
https://docs.microsoft.com/microsoft-365/security/defender-endpoint/advanced-features?view=o365-worldwide
I will suggest you to get check from Microsoft Licensing for these plans So that you can deploy Endpoints.