Hello,
For some of our layers we have configured symbology in ArcGIS Pro. We use unique values and assign symbolgs which consists of shape markers imported from svg files. We vary colors based on different combination of attributes, so we have a simple Arcade expression assigned to proper markers. Additionaly, we rotate some of our symbols. Both dirrefent colors and rotation are configured under "Symbolize features uniquely by deriving symbol property values from feature attributtes". Some pictures for reference:


After publishing layer to Portal for ArcGIS (10.9.1), the configuration made in ArcGIS Pro is not present. If I publish as Map Image, the symbols are fine, however when I publish as Feature Layer, both the colors and rotation are not working. What is more, we want to use this layer in ArcGIS Runtime, so we need configuration in json code for the service in order to use it for renderer. This is not present in json neither for Image nor Feature Layer. I attach json code for the service. Different symbols are defined there, but the Arcade expression or rotation configuration are missing.
I made some tests and configured rotation in settings under "Vary symbology by attributte" instead of "Symbolize features uniquely by deriving symbol property values from feature attributtes". After publishing, the configuration for rotation is available in json code. I attach json code as reference also for this service.

So my question is: Is the symbology configuration under settings "Symbolize features uniquely by deriving symbol property values from feature attributtes" supported on web-level?
If yes, do you have any idea why it is not visible in my json code for service after publishing from ArcGIS Pro to Portal for ArcGIS?
I would appreciate any help.
Thank you,
Aleksandra Zietara