Based on your question, I am assuming you are asking if one late payment will appear on your credit report. Normally, I would say yes, but given the market, my answer would be: it depends on your mortgage company.
It costs money to report late fees on accounts. After two consecutive late payments, you should see it reflected on your credit report.
Ex: Mortgage payment due: august first and you make payment on September 16, you should see that reflected on your credit report.
I hope that helps!
Audeliz Angie Perez