# Change Log Feature
## Introduction
The change log has a retention period of 3 months, so if a value has changed in the last 3 months you will be able to find out which user did the changes and the link to the log file.
This feature will mostly be used in times where there is an overbooking or when investigating why a booking may have a cheaper or more expensive price than expected.
## How to Use
The feature is found in the inventory page, it is one of the buttons above the table
if you click on this button it will you can then click on any cell i nthe table to get the change log.
In the change log you will be able to see a list of changes smae like our image above. This image has 2 changes in the last 3 months but you may have more or less.
{% hint style="info" %}
If no changes in the last 3 months we will show a message to say nothing has changed in the last 3 months.
{% endhint %}
Each entry has 3 parts
1. Date and timestamp which will be in your browser timezone.
2. The value at that time, in this example it is availability and the value is 2
3. Link to the log file
## How to find out which user made the changes
If you click on the log link in blue it will bring up the log file. Inside you will be able to find which user made the changes. It may be a real user or a PMS user. You can tell by the user name.
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