Werk #12343: fix missing __id in folders after upgrade from 1.6.0

Component Core & setup
Title fix missing __id in folders after upgrade from 1.6.0
Date Apr 28, 2021
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.1.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
2.0.0p4 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

When upgrading from 1.6.0 to 2.0.0 until 2.0.0p3, only the root-folder got assigned a __id key which is required for the folder endpoints of the REST API. Access to other folders with the REST API would result in a HTTP 500 error with an error message.

During the upgrade to 2.0.0p4, these folders will be fixed.

No further action (apart from upgrading) is necessary.

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