RDP.DateCalcPeriod with API

We use the below formulae to get the maturity of the RIC code using LSEG excel plug in. We would also like to understand how this could be downloaded via the API?

 

 

=RDP.DateCalcPeriod($”29/07/2025),MID(USD3MD=,4,2),,LEFT(USD3MD=,3),"ENDDATE")

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