# Data Correction Timing

### Irregular Data Correction

* When the payer population changes due to shifts in the credit and debit card user population.
* When data is changed due to statistical algorithm improvement

{% hint style="info" %}
Published statistics will be kept as stable as possible, but may be adjusted without notice to maintain data quality.

In the event of changes to the overall statistical criteria, including changes to the reference population, the Company will provide prior notice through a separate announcement.
{% endhint %}

### Regular Data Correction

* Adjustment of daily data for the current month upon monthly data release

{% hint style="info" %}
Since daily data for an ongoing month is preliminary, it may be adjusted and provided without prior notice when monthly data is released.
{% endhint %}

* Adjustment of daily/monthly data from two months prior upon monthly data release

{% hint style="info" %}
Based on actual Korean card spending data published by Statistics Korea with a delay of up to 45 days, previously estimated daily and monthly data for the relevant month may be adjusted without prior notice to better reflect actual spending levels.
{% endhint %}


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