REVENUE REGULATIONS NO. 10-2019 issued on December 2, 2019 amends the pertinent provision of Revenue Regulations (RR) No. 4-2000, as amended by RR No. 7-2005, by providing a new “Notice to Issue Receipts/Invoices” to be exhibited at place of business. Persons required by law to issue official receipt/sales invoice are directed to post the said Notice in their places of business, including branches and mobile stores, in such area conspicuous to the public.