@Ratan Bhattacharya - Welcome to Microsoft Q&A and thanks for reaching out to us.
You get this error message when your Azure Subscription that you are using to subscribe to SendGrid offer is not enabled for the Azure Marketplace.
In order to resolve this, you will need to enable the Azure Marketplace for your subscription.
Please follow the below steps to enable the Azure Marketplace:
- Sign into Azure portal using your Azure subscription credentials.
- Go to Subscriptions in the left pane, select the subscription that you want to enable for Azure Marketplace.
- Click on "Enable Azure Marketplace" button.
- Follow the instructions to enable the Azure Marketplace.
- Once enabled, you should be able to subscribe to the SendGrid offer without any issues.
Hope this helps. and please feel free to reach out if you have any further questions.
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