Hello,
I have the following errors when trying to apply asset package in an enterprise geodatabase :
The asset package has the following errors (27/27):
Item Field OID Value Message Level
0 B_Subnetwork_Summaries network_attribute 4 Asset group Network attribute does not exist error
1 B_Subnetwork_Summaries network_attribute 5 Asset group Network attribute does not exist error
....
15 B_Subnetwork_Summaries filter_name 1 Asset type Network attribute does not exist error
16 B_Subnetwork_Summaries filter_name 2 Asset type Network attribute does not exist error
My B_Subnetwork_Summaries looks fine :

I did not have any issue in 3.3 but had to revert to 3.1 due to the incompatibility with Field Maps.
ArcGIS Pro 3.1.6 was used to create the UN locally, then to export the Asset Package in version 6 and finally to apply it to my enterprise Gdb. DB is Postgres 14 and eGdb v11.1.0.41833
Thanks for your help