Nikki created this task.
Nikki added projects: Wikibase-Quality-Constraints, Wikidata.
Restricted Application added a subscriber: Aklapper.

TASK DESCRIPTION
  There is often not quite a one-to-one mapping between entities and external 
identifiers which causes entities to create constraint violations for the 
single value and distinct value constraints.
  
  When a single entity has multiple identifiers, we can use the separator 
<https://www.wikidata.org/wiki/Property:P4155> property on the constraint to 
specify which qualifiers can be used to make the entity not trigger a 
constraint violation (see T173594 <https://phabricator.wikimedia.org/T173594>). 
I would like to have a similar thing for the distinct value constraint which 
would allow us to use qualifiers like identifier shared with 
<https://www.wikidata.org/wiki/Property:P4070> on the statements instead of 
having to list the entities as exceptions to the constraint.

TASK DETAIL
  https://phabricator.wikimedia.org/T277855

EMAIL PREFERENCES
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To: Nikki
Cc: Nikki, Aklapper, maantietaja, Akuckartz, Nandana, Lahi, Gq86, 
Lucas_Werkmeister_WMDE, GoranSMilovanovic, QZanden, LawExplorer, _jensen, 
rosalieper, Agabi10, Scott_WUaS, abian, Wikidata-bugs, aude, Mbch331
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