Search volume data for keywords on the Search Demand Trends report is only available for a number of months prior to when the keyword was added to the campaign.
Google: 12 months
Bing: 6 months
Baidu: 1 month
Naver: 1 month
As soon as the keyword is added, Dragon Metrics will get data for as many months as possible. Then once a month after this, we will continue adding another month of data.
Because it's possible that keywords may be added at different times, it may be possible that search volumes may not be available for all keywords on all dates in the selected range.
Since search volumes are aggregated for all keywords, when some search volumes are missing data for dates, it will affect the reliability of this data. When this happens, a warning message will be shown to help ensure only reliable data is shown.
In the following example, we are tracking just 6 keywords over a one year date range. They were added at the same time, so search volume data is available for all dates in the selected range.
The chart shows a clear downward trend, which means search demand was dropping throughout the selected date range.
Now let's see what would happen if these keywords were not added all at once, but instead one new keyword every two months. In this scenario, we do not have search volume data for all keywords in the set (notice that January only shows data for one keyword).
Since the chart shows a clear upward trend, this would give the incorrect impression that search demand was increasing simply because data was not available for some keywords in the selected range.
Options for avoiding this situation
For this reason, we show a warning that it's best not to use aggregated data in this scenario. Instead 3 options are presented:
The first option is to simply hide the message and ignore the issue. Since this can result in misleading reports, we don't recommend this in most cases.
The next option is to filter keywords to only include those that have search volume data for all dates in the date range. This is a useful option when the majority of of keywords have data for all dates and only a small number.
For example, if "Filter keywords" were chosen in the following example, "keyword3" would be removed from the set.
The final option is to narrow the date range to dates when data is available for all keywords in a date range. This is a good choice when you have many keywords added at one time partway through the selected date range.
For example, if "Limit date range" were chosen in the following example, the new date range would be set to July 2019 - December 2019.