Tax Residency Certificate for NRI

An NRI working full-time in Bahrain, where there's no personal income tax, received a notice from the Indian Income Tax Authority requesting a Tax Residency Certificate for Bahrain. The user is unsure how to respond, as Bahrain doesn't issue such certificates due to its tax-free status. Other users have confirmed that Bahrain does issue Tax Residency Certificates, even without a tax treaty, and offered to share the necessary steps.