This question slightly touches on probably a best practice check on publishing a service with group layers on Portal. We do create map services with group layers but we do get warning messages when running analysis prior to publishing. My main question though is if you do have a map service that contains group layers and even sub layers (that are referring to different SDE feature class, how does the max record return limit applies to the map service? Does the record limit apply to each sde featureclass participating in the map service or does the limit apply to the whole service?
does the max record return limit assumes a map service only contains single featureclass source?