There are two cases when you might need this:
1) You want to upload historical data from your tracker into your SearchAdsHQ account;
2) You see significant difference in the number of installs and events you see in your SearchAdsHQ account and MMP.
For both of these cases we will need raw data reports from your MMP (2 CSV files - one for installs, the other one for events). The reports CSVs must have the click/tap time column.
Please contact your MMP to obtain these files.
Some comments depending on the MMP you use:
1) AppsFlyer - please see the details on how to download this report here - https://support.appsflyer.com/hc/en-us/articles/209680773-Export-Data-Reports.
If you do not have access to AppsFlyer raw data reports, please contact AppsFlyer support at email@example.com.
2) Adjust - please contact Adjust support to help you. They usually store only 1-2 weeks of information and provide help to get this data.