Cumulative IRF after lpirf (Local-projection) in Stata 18

[S. M. Woahid Murad]

I am happy to get local-projection impulse–responses in Stata 18. But I cannot generate cirf after lpirf. I went through the following steps:

lpirf y x1 x2 x3, lags(1/4) vce(robust) step(12)
irf set lpirf.irf, replace
irf create lpmodel
irf graph cirf, impulse(x1 x2 x3) response(y) yline(0) xlabel(0(2)12)

Eventually, I received an error code:
cirf not available after lpirf

Could anyone please suggest me an alternative way?

[Sebastian Huertas]

I would like to second this question. It's a bit odd that lpirf seems not to have a way to produce cumulative IRFs.

The only workaround I've found is to use ivlpirf, using the endogenous variable as an instrument for itself, and then using the cumulative option:

ivlpirf y, endogenous(x=x) cumulative

This produces a cumulative IRF that can then be produced using the "irf graph" command.