**Task:** Request a new Property WikiTreeCategory see [[ https://www.wikidata.org/w/index.php?title=Wikidata:Property_proposal/WikiTreeCategories | Proposal ]] and please vote
Feedback from {T236340} from people at WikiTree working with data quality WikiTree <-> Wikidata see [[ https://www.wikitree.com/wiki/Space:Data_Doctors_Report_2019-10-27#DBE_871 | Space:Data_Doctors_Report ]]
Below [[ https://www.wikitree.com/wiki/Space:Data_Doctors_Report_2019-10-27#DBE_871 | example how Wikidata ]] is used in WikiTree for quality checks, see also [[ https://www.youtube.com/watch?v=D6EIqBtz8Bk | video explaining Wikidata mismatch ]]
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Example of a help page for Wikidata mismatch in WikiTree [[ https://www.wikitree.com/wiki/Space:DBE_541 | Space:DBE_541 ]]
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# WikiTree has today > 70 000 people connected [[ https://www.wikidata.org/wiki/Property_talk:P2949 | Property 2949 ]]
# they use the Wikidata [[https://www.wikidata.org/wiki/Wikidata:Database_reports/Constraint_violations/P2949 | constraint violations reports ]] to check the data for
# [[ https://www.wikidata.org/wiki/Wikidata:Database_reports/Constraint_violations/P2949#%22Single_value%22_violations | Duplicates ]]
# [[ https://www.wikidata.org/wiki/Wikidata:Database_reports/Constraint_violations/P2949#%22Unique_value%22_violations | Unique value ]]
# Other checks done
# [[ https://www.wikitree.com/wiki/Space:DBE_541 | 541 Wikidata - Clue for Father ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_542 | 542 WikiData - Possible Father on WikiData ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_543 | 543 Wikidata - Clue for Mother ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_544 | 544 WikiData - Possible Mother on WikiData ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_546 | 546 Wikidata - Possible spouse ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_551 | 551 Wikidata - Missing gender ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_552 | 552 Wikidata - Different gender ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_553 | 553 Wikidata - Empty birth date ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_554 | 554 Wikidata - Imprecise birth date ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_555 | 555 Wikidata - Different birth date ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_556 | 556 Wikidata - Empty death date ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_557 | 557 Wikidata - Imprecise death date ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_558 | 558 Wikidata - Different death date ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_559 | 559 Wikidata - Missing birth location ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_561 | 561 Wikidata - Missing death location ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_563 | 563 Wikidata - Possible duplicate by father ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_564 | 564 Wikidata - Possible father ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_565 | 565 Wikidata - Possible duplicate by mother ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_566 | 566 Wikidata - Possible mother ]]
# [[ https://www.wikitree.com/wiki/Space:DBE_567 | 567 WikiData Double entry ]] - explained in [[ https://www.youtube.com/watch?v=D6EIqBtz8Bk | video ]]
By mixing WikiTree people and WikiTree categories in one Wikidata property will makes this less useful as Categories for e.g. a Swedish Parish in WikiTree could be same as two objects in Wikidata as we have decided to model the objects in a different way in Wikidata. This can be handled with exceptions (see [[ https://www.wikidata.org/wiki/Property:P778#P2302 | Property 778 ]]) but splitting the property in one for human and one for Categories/Spaces feels a cleaner solution
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