After upgrading the system from the version R02.01.12 to the version R02.02.22 customer noticed two problems:

1. Error message "Primary IP  address must be unique" on the 10th base station (see KBA00050454).

2. 1st base station does not apply new configuration; (changing any parameter on the WebNM does not apply on the configuration of this BTS). When clicking on "Apply" nothing happens.

The problem occurred after upgrading to the system version R02.02.22. On the previous version R02.01.12 (both) problems were not seen.
Switching over servers did not make any difference - the same result.
Upgrading from R02.02.22 to the (current) version R02.03.05 did not help either. 

DIMETRA Express (redundant) system. Integrated servers.
System release: R02.03.05

The source of the both problems was IP conflict between two sites (1 and 10). The issue was identified after checking IPs of all configured sites in nw.json file (DEX logs). 

The esl_ip1, esl_gw1, and esl_mask1 of site 1 were incorrect, and had the same data as site 10. This was the reason for the conflict.

The nw.json file can be found in this location: \snakeeyes\igas_disk\upgrade\.

(Check KBA00050454 for details how to change the incorrect IPs)

This was a known bug in a prior release. The reason this was not fixed by upgrade was that the bug in the prior release put the wrong configuration for site 1, and the upgrade will not change this configuration, which is the reason for the manual updates.

The fix for this is to set all the fields above to "0.0.0.0" in bsconfig.db for site 1 and use apply in the base station to synchronize those changes to cfg.json and nw.json. 

Then once this is completed it should be verified that the issue no longer exists. The configuration should be sent from the active to the standby DEX server to ensure that the standby has the correct configuration.