# Successor Cross Reference – (Type 30 Record)

This record holds references to a UPRN and to any replacement UPRN, for example, if a building is split into two sub-buildings; the sub-building UPRNs will be referenced in the successor record.

{% hint style="info" %}
Please note that this record type is not currently utilised in the product.
{% endhint %}

### Data type attributes <a href="#data-type-attributes" id="data-type-attributes"></a>

The following page provides details about the attributes included with this data type, their types in the different output formats, and other important metadata about them.

### fid

A non-persistent integer which is autogenerated and is required within the OGC GPKG format.

* **Attribute Name**: Not provided (GML), Not provided (CSV), fid (GPKG)
* **Data Type:** Integer
* **Multiplicity**: \[1]

### Record identifier

Identifies this record as a Successor Cross Reference (type 30).

* **Attribute Name**: Not provided (GML), RECORD\_IDENTIFIER (CSV), Not provided (GPKG)
* **Data Type:** Integer
* **Size**: 2
* **Multiplicity**: \[1]

### Change type

Type of record change – please see [COU supply](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase-premium-islands/supply-and-update#cou-supply) for more information.

* **Attribute Name**: Not provided (GML), CHANGE\_TYPE (CSV), change\_type (GPKG)
* **Code List Name:** [ChangeTypeCode](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase-fundamentals/code-lists-and-enumerations/changetypecode)
* **Size**: 1
* **Multiplicity**: \[1]

### Pro order

The order in which the records were processed in to create the data supply.

* **Attribute Name**: Not provided (GML), PRO\_ORDER (CSV), Not provided (GPKG)
* **Data Type**: Integer
* **Size**: 16
* **Multiplicity**: \[1]

### UPRN

Unique Property Reference Number.

* **Attribute Name**: Not provided (GML), UPRN (CSV), uprn (GPKG)
* **Data Type**: Integer
* **Size**: 12
* **Multiplicity**: \[1]

### Succ key

Key value to uniquely identify the successor cross reference record and the primary key for this table.

* **Attribute Name**: succKey (GML), SUCC\_KEY (CSV), succ\_key (GPKG)
* **Data Type**: CharacterString (GML), char (CSV ), String (GPKG)
* **Size**: 14
* **Multiplicity**: \[1]

### Start date

Date on which the record was first loaded into the database.

* **Attribute Name**: Provided in [EntityWithLifeCycle](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase-premium-islands/addressbase-premium-islands-technical-specification/structured-data-types/entity-with-lifecycle) (GML), START\_DATE (CSV), start\_date (GPKG)
* **Data Type**: Date
* **Multiplicity**: \[1]

### End date

The date on which the record ceased to exist in the product database.

* **Attribute Name**: Provided in [EntityWithLifeCycle](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase-premium-islands/addressbase-premium-islands-technical-specification/structured-data-types/entity-with-lifecycle) (GML), END\_DATE (CSV), end\_date (GPKG)
* **Data Type**: Date
* **Multiplicity**: \[0..1]

### Last update date

The date on which any attribute on this record was last changed.

* **Attribute Name**: Provided in [EntityWithLifeCycle](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase-premium-islands/addressbase-premium-islands-technical-specification/structured-data-types/entity-with-lifecycle) (GML), LAST\_UPDATE\_DATE (CSV), last\_update\_date (GPKG)
* **Data Type**: Date
* **Multiplicity**: \[1]

### Entry date

The date on which the UPRN attached to this record was entered into the Local Authority database.

* **Attribute Name**: Provided in [EntityWithLifeCycle](https://docs.os.uk/os-downloads/products/addresses-and-names-portfolio/addressbase-premium-islands/addressbase-premium-islands-technical-specification/structured-data-types/entity-with-lifecycle) (GML), ENTRY\_DATE (CSV), entry\_date (GPKG)
* **Data Type**: Date
* **Multiplicity**: \[1]

### Successor

UPRN of successor BLPU.

* **Attribute Name**: successor (GML), SUCCESSOR (CSV), successor (GPKG)
* **Data Type**: Integer
* **Size**: 12
* **Multiplicity**: \[1]