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Problem report
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    Resolution: Fixed
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Trivial
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    5.4.0alpha2
 
- 
        Sprint 73 (Feb 2021), Sprint 74 (Mar 2021), Sprint 75 (Apr 2021), Sprint 76 (May 2021)
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        1
 
Steps to reproduce:
- Create DIscovery rule with host prototype
 - Wait until host is discovered
 - Mass update discovered host
 - Select Add Host groups and select some group and update (or any other checkbox)
Result: text message in details: Cannot update "inventory_mode" for a discovered host.