Using ArcGIS 10.4.1, I am trying to add a watermark to a cached map via Server object interceptor, but the result is not as expected. Server object interceptor should handle each REST response from ArcGIS server. But in my case either none or only a few tiles are handled by SOI. It looks like only randomly chosen tiles are watermarked (always different ones): I suppose that it has something to do with caching, but I tried almost all possible combinations of settings in ArcGIS service properties and the result has never been as needed. Is there any other/better way to add a watermark to a map? Or what should I do in order to handle all tiles using ArcGIS SOI?
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