MappingModel generate incorrect model hash for 'Preserve After Deletion' attributes

App & System Services iCloud & Data
odnairy OP
Created Jul ’19
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Today I've investigated migration error. According to my investigations model with preserving after deletion fields would get incorrect hash calculation. That's why custom mapping model would not applied.

In `-com.apple.CoreData.MigrationDebug 1` logs the next entry happens: 'CoreData: annotation: (migration) mismatched and destination hashes for mapping model MappingModel.cdm'.

My mapping model was regenerated several times on different machines to get rid of potential local issues.

Sample code: https://github.com/OdNairy/CloudKitError-FB6713955.git


Feedback ID: FB6713955

Replies  2
Boosts  0
Views  931
Participants  3
bigmeech OP
Dec ’21

exact same issue here

0
ulizurucker OP
Sep ’22

ran into the same issue with Xcode 13.X

Is there /has there been any feedback from Apple side?

Has anybody discovered possible workarounds? The only thing I found is at runtime: to load the migration manually from file, and adjust the sourceEntityVersionHash and destinationEntityVersionHash of the loaded NSMappingModel.... but that's nothing that I really want to do.

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MappingModel generate incorrect model hash for 'Preserve After Deletion' attributes
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