Merge pull request #5261 from braze-inc/BD-2055

BD-2055: Add more info for 5XX errors

_docs/_api/errors.md

@@ -58,7 +58,7 @@ The status code element of a server response is a 3-digit number where the first
 
 - The **2XX class** of status code (non-fatal) indicates that **your request** was successfully received, understood, and accepted.
 - The **4XX class** of status code (fatal) indicates a **client error**. Refer to the fatal errors chart for a full list of 4XX error codes and descriptions.
-- The **5XX class** of status code (fatal) indicates a **server error**. There are several potential causes, e.g., the server you're trying to access is unable to execute the request, the server is undergoing maintenance making it unable to execute the request, or the server is experiencing high levels of traffic. When this happens, we recommend you retry your request with exponential backoff.
+- The **5XX class** of status code (fatal) indicates a **server error**. There are several potential causes, e.g., the server you're trying to access is unable to execute the request, the server is undergoing maintenance making it unable to execute the request, or the server is experiencing high levels of traffic. When this happens, we recommend you retry your request with exponential backoff. In the event of an incident or outage, Braze is not able to replay any REST API call that failed during the incident window. You will need to retry any calls that failed during the incident window.
 
 ### Fatal errors