What kind of impact does a 404 have in a sitemap regarding ranking?

[GaryBlanchard]

We recently had a site update where our robots file disallowed our sitemap for about two weeks.  When we found the problem and resubmitted the sitemap to Google Search Console, it found a 404 error. Does this have any impact on ranking or visibility if we are still recovering from the disallow?

[Expansyon]

Initially, it is a problem for google if you have uploaded the sitemap,xml to the search console. Have you noticed in this time if your visibility is low because of the errors found in the sitemap?

[GaryBlanchard]

We ended up discovering that Google was very slow to update the console.  Where other crawlers will crawl on demand and provide results in a couple of hours, in comparison, Google is about 3-4 days behind.  We also heard that they have been having issues with the crawler lately which is what led to them temporarily disabling the "Request Indexing" button.  So we look at Google now but only as a delayed reference after having used other tools like Moz and Screaming Frog. We found all of our answers using these other tools. We just wait patiently to know that eventually we are in Google's good graces.