Hi,
when working with an FGDB everything works, when working against a FeatureService the following errors occur. Setting any dimensioning options programmatically results in a GeodatabaseException. Only the settings "*.None" are processed. All option types are affected (see below). The error occurs with Pro 2.9.6 and with 3.1.2.
This is the Esri code decompiled with DotPeek that is causing the error:

