When you upload Data Sources data, you are uploading the metrics that will be available in the report interface.For example, if you are uploading Call Center Revenue for products you sell on your site, you can have that Call Center Revenue in the same report as Online Revenue. However, you will not be able to use it in conjunction with Visits, because you didn't upload the number of Visits with it. Adobe can only report on the metrics and elements that you uploaded through Data Sources (in addition to the regular marketing report metrics).
Data Source UI allows upload of 3 dimensions and metric. However, you can add dimensions and metrics manually once the template is downloaded. Once the import is successful, please ensure following aspects are covered:
1. Corresponding dimensions and metrics are defined inside Report Suite Manager for a report suite.
2. Date_time information is added correctly.It is mandate column.
3. Ensure there is no serialization enabled for the custom event as there are changes of hits being discarded due to this.