When annotating or color coding in the ArcMap (ArcGIS) platform, why aren't all the WaterGEMS / SewerGEMS / HAMMER properties available?
The attributes available to color code and annotate on are based on the attributes included in the GeoTables, which is a special type of Flextable. For this reason, some property fields may need to be added to the element GeoTable first before you are able to add color coding or annotations.
To add fields to the FlexTables, click the product menu (Such as Bentley WaterGEMS), then select View > FlexTables. In the FlexTables manager, scroll to the"GeoTables" section and open the table corresponding to the element type in question. The fields shown in this table will be linked to the geodatabase (MDB file created when first setting up the project in ArcMap mode) and thus will be available to ArcMap for symbology. Click the Edit button at the top of the FlexTable to add or remove attributes. The following link has more information on doing this: Customizing FlexTables for viewing and reporting data - Moving, adding, and removing columns.
Note that when reopening your project at a later time, these settings will not apply until the model has been properly re-loaded using the Hydraulic Model Manager from the Bentley product's View menu.
WaterGEMS for ArcGIS FAQ
SewerGEMS For ArcGIS [FAQ]
What is a GeoTable?