Google will be deprecating support for sitemaps ping and the endpoint will stop working by the end of this year. Google said it is announcing the “deprecation of the sitemaps “ping” endpoint.” This means that HTTP ping requests will result in a 404 error. Google said the sitemap protocol defines an unauthenticated REST method for submitting sitemaps to search engines. Google said you can still submit your sitemaps through both Google Search Console and also through your robots.txt files. This is just a heads up that the ping sitemap endpoint support is going away later this year.
Source: The Nation June 26, 2023 16:05 UTC