Property talk:P4423

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Portuguese lighthouse ID
national number of a lighthouse in Portugal

Data type	External identifier
Domain	beacon (Q7321258)
Allowed values	[1-9]\d*(\.\d+)?
Example	Cabo da Roca Lighthouse (Q5015743) → 186 Cabo Mondego Lighthouse (Q11784) → 102 Costa Norte Porto Santo Light (Q107361124) → 611
Source	https://www.unc.edu/~rowlett/lighthouse/prt.htm
Related to country	Portugal (Q45) (See 35 others)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other external identifier Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Database reports/Constraint violations/P4423 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 91 Main statement 88 96.7% of uses Qualifier 3 3.3% of uses
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[create Create a translatable help page (preferably in English) for this property to be included here]

Format “[1-9]\d*(\.\d+)?”: value must be formatted using this pattern (PCRE syntax). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4423#Format, SPARQL

Distinct values: this property likely contains a value that is different from all other items. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4423#Unique value, SPARQL (every item), SPARQL (by value)

Single value: this property generally contains a single value. (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4423#Single value, SPARQL

Type “beacon (Q7321258)”: item must contain property “instance of (P31)” with classes “beacon (Q7321258)” or their subclasses (defined using subclass of (P279)). (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4423#Type Q7321258, SPARQL

Item “country (P17): Portugal (Q45)”: Items with this property should also have “country (P17): Portugal (Q45)”. (Help)

List of violations of this constraint: Database reports/Constraint violations/P4423#Item P17, hourly updated report, search, SPARQL

Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4423#Entity types

Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (Help)

Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P4423#Scope, SPARQL

This property is being used by: sl:Predloga:Lighthouse identifiers/list ko:틀:위키데이터 속성 추적 Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

212.1

Farol da Mama (Q10280117) has a number of 212.1 - is this a valid number, because it is triggering a format violation? — Martin (MSGJ · talk) 22:49, 29 January 2023 (UTC)

I have updated the format constraint — Martin (MSGJ · talk) 15:07, 30 January 2023 (UTC)