@HimanshuSinha-msft , PME is one of the *ME tenants, like AME. It's not related to personal MS accounts.
From the Synapse workspace (in PME), I should be able to see the MSFT AAD tenant, so I can connect to the repo in MSFT. But that's not happening since I'm unable to see the MSFT AAD tenant, as in the dropdown in the screenshot below -