st: conformability error in ivtobit

["Monica L. Parra Torrado" <mparrat@bu.edu>]

Hi, I am trying to run an ivtobit but I get:

conformability error
r(503);

My model is as follows:
ivtobit h_allkits if panel==1, ll(0) endog(ratleft ratleft2) 
iv(ratleftlag inflation smfempyvar inc_totalseats inflat_ratleftlag 
inc_ratleftlag ) exog(zpvlf zpvlf2 erlesscu ersmcu ermdcu erillnb 
ercusmol ercubgol erlow enalab ehh rnyrb h_iallkits h_iallkits2 enwph 
evadac dtblock* ddist*)

What can be the problem?

Thanks for any advice,

Best,
Monica

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