Need help if someone faced a similar issue.
Partner A supports Customer Y for the development and implements the development in 2019. Currently, Partner A wants to close the operation and Partner B going to take ownership of the solution to support the customer for any update/bug in the solution.
When we upload the MCS solution to the Partner B development tenant, we encounter the below error.
Error: Upload not allowed. The solution is developed for customer ZZZZZZ.