In the taking of acknowledgments and the performing of other notarial acts requiring certification, a certificate endorsed upon or attached to the instrument or document, which certificate shows the date of the notarial act and which states, in substance, that the person appearing before the officer acknowledged the instrument as his act or made or signed the instrument or document under oath, shall be sufficient for all intents and purposes. The instrument or document shall not be rendered invalid by the failure to state the place of execution or acknowledgment.