Your friend is right to look for official confirmation because only official records will be accepted in legal matters. There is a straightforward explanation available here: https://lovilave.com.ua/blog/yak-diznatysya-zaborgovanist-z-alimentiv. According to this guide, it’s possible to check the debt online via the Unified Register of Debtors. The system allows searching by the debtor’s full name, and if there’s unpaid child support, it will appear in the results. This is considered valid proof of debt. However, in certain cases, the register may not yet reflect the latest updates, so it’s also useful to double-check with the State Enforcement Service. If her goal is legal enforcement, an official certificate from the enforcement authority might be required. So, the best approach is to first use the online register and then request documents from the enforcement office to have full legal clarity.