Field Maps Error : Geodatabase item already exists.

[PierreloupDucroix]

Hello,

I have a Postgres geodatabase with a Utility Network, so I have multiple feature classes with a lot of subtypes and domains.

I published a feature service and am using it in maps authored with ArcGIS Pro using subtype group layers.

Once shared with my portal, everything works in the map viewer, but some layers don't display in Field Maps.

I don't have any ArcGIS Server logs, only a Field Maps error :

Domain :

ARCGIS_RUNTIME

Code :

3054

Description :

Geodatabase item already exists.

URL :
https://my-portal/ags/rest/services/my-service/FeatureServer/9

I found that it may be related to domains having the same name in the GDB or something like that, but I have checked, and it seems OK in my database.

I don't have any clue where to look or how to reproduce easily.

Any idea ?