> For the complete documentation index, see [llms.txt](https://help.openloyalty.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.openloyalty.io/technical-guide/data-exports/data-structure-and-types/member-tier-changes.md).

# Member Tier Changes

The Member Tier Changes file contains information about the tier changes of your loyalty program's members at the end of the given day.

{% hint style="info" %}
**Delta export.** Each daily file contains member–tier-set entries created or updated during that day. Upsert on `tierSetId` + `memberId` and keep the row with the latest `updatedAt`.
{% endhint %}

**File:** `analytics/MemberTierChanges/member_tier_changes_YYYY_MM_DD.csv`\
**Primary key:** `tierSetId` + `memberId`

A sample file is provided below:

{% file src="/files/dgrb0kPp6kfFCkvEKo13" %}

**Available Data:**

<table><thead><tr><th>Column</th><th width="102.90625">Type</th><th width="131.4453125">Can be empty</th><th>Description</th></tr></thead><tbody><tr><td><code>tierSetId</code></td><td>uuid</td><td>No</td><td>Tier set ID</td></tr><tr><td><code>memberId</code></td><td>uuid</td><td>No</td><td>Member ID</td></tr><tr><td><code>currentTierId</code></td><td>uuid</td><td>Yes</td><td>Member's current tier</td></tr><tr><td><code>assignedManuallyTierAt</code></td><td>datetime</td><td>Yes</td><td>Manual assignment date</td></tr><tr><td><code>createdAt</code></td><td>datetime</td><td>No</td><td>Date created</td></tr><tr><td><code>updatedAt</code></td><td>datetime</td><td>No</td><td>Date last updated</td></tr><tr><td><code>tenantId</code></td><td>uuid</td><td>No</td><td>Tenant ID</td></tr></tbody></table>


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