You can add your India permanent account number (PAN) to your account if you wish to claim back tax deducted at source (TDS) but don’t have a goods and services tax (GST) registration number (GSTIN). To process a TDS refund for your Facebook ad account, you’ll need to add your PAN.
Before you begin
How to add your PAN to your ad account
To add PAN to your ad account:
Your PAN is now saved to your ad account. If you have multiple ad accounts, you must add your PAN to each account separately.