1. Is there any possibility to eliminate all errors on requests that come on a specific 4xx code for example, without adding the exceptions in the ignore list ?
2. Is there a feature to ignore exceptions that are associated with a specific error code ?
For example if we have the same exception on a request that come with both error codes HTTP 404 and HTTP 500, we would like to ignore the errors that only come with HTTP 404 in association with the exception in cause.
Exceptions and HTTP error codes are different things. You can even have HTTP/200 with lots of exceptions.
Given this, I believe Dynatrace cannot do the configuration you want. You would probably have to submit a Product Idea, so it can be voted up, and eventually implemented.
BTW, your are trying to filter these exceptions, so that they don't show up somewhere. Where do you want them not to appear? In MDAs, Purepaths, list of exceptions inside services, etc. ?
Hey, did you checked on below link ?
also already accepted solution for similar requirement?