We have a Flow member that we want to calculate only when a different member has an amount present. How can we write this calculation?

Answer

If the member you’re checking to see if a value is present is part of the calculation inputs, then you can use the RemoveZeros or RemoveNoData functions in the formula:

If the member you’re checking is NOT part of the calculation inputs, then you can accomplish using a Data Buffer (alternately, an EVAL statement):

Source: Office Hours 2020-12-17 Partner Enablement