AddressBase Islands February 2024 – Epoch 108

This release note provides information about the February 2024 (Epoch 108) release of the AddressBase Islands products. These products were released to customers on 22 February 2024.

Record counts

Product	Full Supply Record Count	Change-Only Update Record Count
AddressBase Plus Islands	1 146 542	2 581
AddressBase Premium Islands	See rows below	See rows below
Street	48 426	91
Street Descriptor	48 426	34
BLPU	1 229 481	3 308
Classification	1 229 481	1 827
LPI	1 238 840	1 804
Organisation	39 354	175
Delivery Point Address	962 351	820
Application Cross Ref.	1 295 835	1 460
Successor	0	0

Changed records

If you receive a Change-Only Update (COU) supply for your AddressBase Islands product, you will receive Insert, Update and Delete records within the supplied file. The following tables detail the count of these records.

AddressBase Plus Islands

Change Type	Count
Inserts	576
Updates	1 834
Deletes	171

AddressBase Premium Islands

AddressBase Premium Islands Table	Inserts	Updates	Deletes
Street	34	57	0
Street Descriptor	34	0	0
BLPU	1 031	2 215	62
Classification	1 031	734	62
LPI	1 059	683	62
Organisation	41	33	101
Delivery Point Address	428	224	168
Application Cross Ref.	1 006	352	102

It is important that COUs are processed with Deletes first, then Inserts and Updates. This is to ensure that updates are applied in the correct order. Further guidance on this can be found in 'Working with COU data' in the AddressBase Getting Started Guide.

Source data currency

The following information relates to the currency of the source data used in the creation of Epoch 108:

Data Source	Date
Pointer (Northern Ireland)	14 January 2024
DigiMap (Channel Islands)	18 January 2024
Isle of Man	17 January 2024
Royal Mail PAF	18 January 2024

Data issues

AddressBase Plus Islands issues

There are no reported issues in this release of AddressBase Plus Islands.

AddressBase Premium Islands issues

Affected output formats: CSV and GML

• Street incorrect coordinates – There are two Streets which have incorrect start or end coordinates of 000000. The unique identifiers can be provided upon request through your OS Relationship Manager.

Notification of Epoch 109’s Improvement in Historic BLPU State Code Completeness and Large Release Size

Summary

The release will enhance clarity and consistency of lifecycle representation within product.

A conformance improvement has been delivered for BLPU State attribute for records where the BLPU Logical Status was 8 (historic) and BLPU State was null; for increased completeness, BLPU State Code has been populated with value 4 (no longer existing) and date stamped for the change applied.

Issue description

The BLPU state identifies the current lifecycle stage of a property (or object) and is additional to the mandatory LOGICAL_ STATUS field.

BLPU State Code Enumeration

The BLPU code is an optional attribute for Local Authority Custodians to complete and therefore this attribute may be NULL in product.

An improvement to the completeness of the BLPU State Code was identified as a quality enhancement for lifecycle information as values for BLPU state code 4 can be accurately inferred from a Logical Status of 8. This enhancement allows the data to be interpreted more easily by removing conflict between addresses with a historic logical status and no BLPU state.

All nations within GB and the Islands product regions will benefit from this improvement, as such it impacts approximately 1.2 million records for a Full Supply.

Impact

This quality improvement will be delivered in the next release, Epoch 109, and will mean a larger than usual supply of changes.

No special action will be required to load the release differently.

Next release

The next release of AddressBase Islands products, Epoch 109, is scheduled for Tuesday 05 April 2024.