For Romanian invoices, in case of B2B, the Buyer Legal Registration Identifier CompanyID is used to indicate the Trade Register Order Number (also called the "J-Number"). It is optional to provide this number.
For B2C, the CompanyID is used to provide the Personal Numerical Code, Cod Numeric Personal (CNP) of the customer. If the CNP number is unknown, a 13-zero placeholder 0000000000000 can be used.

Elements

Example for B2C

<Invoice>
	<!-- Code omitted for clarity -->
   	<cac:AccountingCustomerParty>
		<cac:Party>
		<!-- Code omitted for clarity -->
			<cac:PartyLegalEntity>
				<cbc:RegistrationName>Ion Popescu</cbc:RegistrationName>
				<cbc:CompanyID>0000000000000</cbc:CompanyID>
			</cac:PartyLegalEntity>
		<!-- Code omitted for clarity -->
		</cac:Party>
   	</cac:AccountingCustomerParty>
   	<!-- Code omitted for clarity -->
</Invoice>