Property talk:P380

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Colon Classification
type of library classification, to be used for topics, not for written works; use with qualifier "edition" with item value "CC 6" or "CC 7"
[create Create a translatable help page (preferably in English) for this property to be included here]
Format “[a-zA-ZΔΣ0-9-]+[a-zA-Z0-9\.\:\;\,\(\)\'\s]*: value must be formatted using this pattern (PCRE syntax).
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P380#Format, SPARQL
Single value: this property generally contains a single value.
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P380#Single value, SPARQL
Distinct values: this property likely contains a value that is different from all other items.
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P380#Unique value, SPARQL (every item), SPARQL (by value)
Qualifiers “reason for deprecated rank (P344), reason for preferred rank (P345), has edition or translation (P381): this property should be used only with the listed qualifiers.
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P380#Allowed qualifiers, SPARQL

constraint “required qualifier constraint (Q804)” declaration error: “incorrect value of property “constraint status (P286)”, acceptable values are: “mandatory constraint (Q678)””.

Allowed entity types are Wikibase item datatype (Q799): the property may only be used on a certain entity type
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P380#allowed entity types
Scope is as main value (Q793): the property must be used by specified way only
Exceptions are possible as rare values may exist.
List of this constraint violations: Database reports/Constraint violations/P380#scope, SPARQL