By default, the card’s billing address is the cardholder’s residential address on file. If that doesn’t work because the merchant is rejecting it as a mismatch, you can try the fallback billing address from our guide:
• Street: 123 Main Street (or any street name)
• City: San Juan
• State: Puerto Rico
• ZIP: 00901
• Country: United States
If that still fails, let us know the merchant name and the exact error you're seeing.