Why did I get website error 3052?

PayPal presented error 3052.

The initial deposits to your bank account failed because the receiving bank refused them.

Verify the account number and routing number you entered. If they seem correct, check with your bank to see if they use different routing numbers for electronic deposits. If you get this error and your bank account is confirmed already, visit PayPal's Contact Customer Service page and indicate the approximate date and time of the error and the steps you took that preceded the error.