Requesting payments is subject to eligibility. Here is a list of a few things that may cause an error when trying to send a payment request:

• Country not found - Payment requests can be sent to payers from most countries. Countries where payment requests are not supported will not be found in the list.
• Domestic payments - In some countries it is not allowed to use the service to receive payments from payers from the same country. If this restriction applies to your country, you will receive an error that says the service does not support domestic payments.
• Payment request limit - You may send up to 100 payment requests per day.
• Unsupported characters - The payment request form supports Latin characters only. You may encounter an error when entering special characters.

 You can find more information about the Request a Payment service here.