Usage of Currency Conversion Types
The function "Usage of Currency Conversion Types" can be found in Where-Used Analysis and in the search view:

This analysis checks the usage of Currency Conversion Types within Queries and Query elements. To start the analysis you have to select a system and enter a Currency Conversion Type. The entry field has a match code search function implemented that shows possible values after entering 3 digits in the field:

For a large result list, an EXCEL export is possible.
The following screenshot shows a sample result of the analysis:
