What are the differences between (GDF) Sub Region: UR and U5

Symptoms
--------

Customers may report one or more of the following:

Coverage results differ when comparing GDF Sub Region UR and U5.
Crimea appears to be included in one Ukraine coverage selection but not another.
Uncertainty about which GDF product should be selected for Ukraine coverage requirements.
Map data validation shows different regional coverage depending on whether UR or U5 is used.
Customers expect UR and U5 to contain the same geographic content but receive different results.

Answer
------

UR and U5 are different GDF sub-region definitions and are not interchangeable. U5 contains mainland Ukraine coverage, while UR contains mainland Ukraine coverage together with Crimea in the Ukraine-view configuration. Customers who require Ukraine coverage including Crimea should use a product configuration that contains UR rather than U5.

Product
-------

Product: GDF (Geographic Data Files)

GDF is a map data product that distributes geographic content through country and sub-region packages. Different sub-regions may exist to support alternative coverage definitions.

Coverage Definitions
--------------------

### U5

U5 represents mainland Ukraine coverage.

Example:

U5 receive coverage for major Ukraine locations such as Kyiv, Lviv, Odesa, and other mainland areas, but do not receive the Crimea coverage contained within UR.

### UR

UR represents mainland Ukraine coverage plus Crimea in the Ukraine-view configuration.

Example:

UR receive mainland Ukraine coverage as well as the Crimea coverage included in the Ukraine-view configuration.

Comparison
----------

| Sub Region | Mainland Ukraine | Crimea Coverage |
| --- | --- | --- |
| U5 | Yes | No |
| UR | Yes | Yes |

Available Coverage Configurations
---------------------------------

### Ukraine View

Includes:

U1
U2
U3
U4
U6
UR

### International View

Includes:

U1
U2
U3
U4
U5
U6

These configurations are intentionally different and support different coverage definitions.

Root Cause
----------

The behaviour is expected. GDF provides separate sub-region definitions for Ukraine coverage requirements. Because UR includes Crimea coverage and U5 does not, customers will observe differences when comparing the two products.

Impact
------

Selecting the incorrect sub-region may result in:

Missing expected geographic coverage.
Differences in validation or coverage testing results.
Incorrect assumptions regarding Crimea inclusion.
Map datasets that do not match application requirements.

Expected vs Unexpected Behavior
-------------------------------

### Expected Behavior

U5 contains mainland Ukraine coverage only.
UR contains mainland Ukraine coverage plus Crimea.
Coverage differences are visible when comparing products that use U5 and UR.

### Unexpected Behavior

Assuming U5 and UR contain identical coverage.
Expecting Crimea coverage when only U5 has been selected.
* Replacing UR with U5 without reviewing coverage requirements.

Additional Product Information
------------------------------

The documented product formula is:

UB = U0 + UR - U5

Ukraine-view coverage that includes Crimea should use the appropriate product configuration containing UR.

Recommended Actions
-------------------

1. Determine whether the intended coverage must include Crimea.
2. Review the selected GDF product composition before deployment.
3. Use a configuration containing UR when Ukraine-view coverage is required.
4. Validate regional coverage requirements during implementation and testing.

Keywords / Tags
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GDF, Geographic Data Files, Ukraine, UR, U5, UB, Ukraine coverage, Crimea coverage, sub-region, map data, geographic coverage, region configuration, cartography, geographic datasets, coverage comparison