Issue facing while creating AKS

I’m facing an issue while creating aks i followed the doc and in that mention only use “Standard_B2s” but while selecting that i’m still facing the issue.

i tried with both option in Cluster preset configuration 1st is Production Standard & Dev/test but face the same

→ error:
B-series node sizes cannot be scheduled. Select another node size.

→ Guide:
Restrictions:

  1. Allowed Node Size: Standard_B2s (only)
  2. Maximum Node Pool Size = 2 nodes (manual or auto-scale)
  3. Please make sure that “Container Insights” and “Alerting” are Disabled

If you scroll down to the bottom of the posts on the guide you will see it has been superseded with this guide:
certified-kubernetes-administrator-course/managed-clusters/aks/console at master · kodekloudhub/certified-kubernetes-administrator-course (github.com)