PINT AE is the UAE specification of Peppol International (PINT), built on the EN 16931 semantic model. It sets which fields an invoice must carry and how they are spelled: amounts in AED, the Peppol participant identifier built from your TIN, and the UAE-specific tax categories.
A package that exports "UBL" or "Peppol BIS" does not automatically produce PINT AE — the country rules differ. Ask your vendor for PINT AE by name.
Official source: Ministry of Finance — eInvoicing