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Werk #12456: API Hosttag configuration: Fixed exception on changing tag configuration

Component Setup
Title API Hosttag configuration: Fixed exception on changing tag configuration
Date Mar 29, 2021
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.1.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT
2.0.0p2 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT
1.6.0p23 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

Changing the tag configuration via the Web API triggered an error The following tags are still used but are not listed in the updated configuration: test:None. when a taggroup with just one toggleable option was explicitly not set on hosts.

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