For each set of a projection we can request something like:
[YourServer]/v1/CurrencyRatesHandling.svc/CurrencyRateSet
This will give a list of all the currency rate sets. Great. One of the query parameters is $count (see [YourServer]main/ifsapplications/projection/v1/CurrencyRatesHandling.svc/$openapi?V3#tag/CurrencyRateSet).
How do I use this on the URL as mentioned?
This is my first step to understand how to implement retrieving the number of rows in a set retrieved via something like the following:
It comes down to knowing in the end, are there zero or more rows. Based upon the count I can perform another step in the process.