Hello Shivansh Agarwal,
Thank you for connecting offline to discuss about the issue.
We understand that you are trying to change the subscription from one directory to another and unfortunately, you lost access to perform any action after the change.
As discussed, since you are the global admin for the other tenant, you can perform elevate access so that you are assigned the User Access Administrator role in Azure RBAC.This grants you permission to assign roles in all Azure subscriptions and management groups associated with this Microsoft Entra tenant. This toggle is only available to users who are assigned the Global Administrator role in Microsoft Entra ID.
Follow these steps to elevate access for a Global Administrator using the Azure portal.
1.Sign in to the Azure portal as a Global Administrator.
If you are using Microsoft Entra Privileged Identity Management, activate your Global Administrator role assignment.
2.Browse to Microsoft Entra ID > Manage > Properties.
3.Under Access management for Azure resources, set the toggle to Yes.
Sharing relevant document for reference: https://learn.microsoft.com/en-us/azure/role-based-access-control/elevate-access-global-admin?tabs=azure-portal
If this answers your query, do click Accept Answer
and Yes
for was this answer helpful. And, if you have any further query do let us know.
Thanks & Best Regards
Janaki Kota