AddressBase Islands April 2024 – Epoch 109

This release note provides information about the April 2024 release of the AddressBase Islands products. These products were released to customers on 05 April 2024.

Record Counts

Product	Full Supply Record Count	Change-Only Update Record Count
AddressBase Plus Islands	1 147 124	172 849
AddressBase Premium Islands	See rows below	See rows below
Street	48 475	150
Street Descriptor	48 475	49
BLPU	1 230 820	181 155
Classification	1 230 820	2 205
LPI	1 240 191	2 448
Organisation	39 272	117
Delivery Point Address	962 791	2 622
Application Cross Ref.	1 297 099	2 408
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	994
Updates	171 443
Deletes	412

AddressBase Premium Islands

AddressBase Premium Islands Table	Inserts	Updates	Deletes
Street	49	101	0
Street Descriptor	49	0	0
BLPU	1 412	179 670	73
Classification	1 412	720	73
LPI	1 424	951	73
Organisation	7	21	89
Delivery Point Address	1 205	652	765
Application Cross Ref.	1 400	872	136

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)	28 February 2024
DigiMap (Channel Islands)	29 February 2024
Isle of Man	29 February 2024
Royal Mail PAF	28 February 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

This release includes an enhancement in the 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 means a larger than usual supply of COUs.

Next Release

The next release of AddressBase Islands products, Epoch 110, is scheduled for Thursday 16 May 024.