> For the complete documentation index, see [llms.txt](https://docs.payments.thalescloud.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.payments.thalescloud.io/3d-secure/ja/meru/endoyzwosuru/endoyznoraifusaikuruwosuru.md).

# エンドユーザーのライフサイクルを管理する

This page explains how your issuer backend can update personal information for an end user and how to perform a logical deletion of an end user in D1.

## Update end user information

D1 lets the issuer backend update the personal information stored for an end user (called a "consumer" in the D1 API).

### Sequence diagram

<figure><img src="/spaces/62lLFDcmLCeqqwmy4Fee/files/rzprb6v0WWEe6S9VKKdH" alt=""><figcaption><p>Update end user information flow between the issuer backend and the D1 backend</p></figcaption></figure>

## Delete an end user

D1 lets the issuer backend logically delete an end user.

When you delete an end user:

* The end user transitions to the `DELETED` state.
* You can no longer create new cards for this end user.
* All cards linked to this end user, including digital cards, are deleted.

### Sequence diagram

<figure><img src="/spaces/62lLFDcmLCeqqwmy4Fee/files/1Ip4KmG7JiqLkjk2Ep6P" alt=""><figcaption><p>Logical end user deletion flow between the issuer backend and the D1 backend</p></figcaption></figure>


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