Hello James Weatherhead
To consolidate your Azure subscriptions, you'll need to transfer the subscription from one tenant to the other. Here are the general steps you can take:
- Ensure that you have the appropriate permissions to transfer the subscription. You need to be a global administrator or a service administrator for the source subscription and the destination subscription.
- In the Azure portal, navigate to the subscription you want to transfer.
- Select "Change Directory" and then select the directory you want to move the subscription to.
- You will be prompted to sign in to the destination directory.
- After signing in, you will see a message indicating that you need to be invited to the destination directory. At this point, you need to invite the account you want to transfer the subscription to, which is likely your corporate business account.
- If you receive an error message indicating that your email already exists, it's possible that you have already created an account in the destination directory using the same email address. In this case, you should sign in to the destination directory using the email address associated with your personal account and check whether you already have an account there.
- If you do have an account in the destination directory, you can use that account to accept the invitation to the subscription.
- If you don't have an account in the destination directory, you can create a new account using a different email address, and then use that account to accept the invitation to the subscription.
- Once the invitation is accepted, you should be able to transfer the subscription to the destination directory.
Note that there are some limitations on transferring subscriptions between tenants, and some services may not be supported in the destination directory. Additionally, any resources you have in the source directory may need to be migrated to the destination directory before the transfer can be completed.
For more questions please click on the links: https://learn.microsoft.com/en-us/partner-center/switch-azure-subscriptions-to-a-different-partner
The above link will give you detail limitations list and Azure support ticket
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