asking about having *Standard errors clustered by firm* and *Robust standard errors adjusted for heteroskedasticit* in the same regression

[hussein bataineh]

please i run a regression for my study i have Standard errors clustered by firm .Also Robust standard errors adjusted for heteroskedasticit

When i run my regression STATA give me

options vce() and robust may not be combined



reg pensionassetallocationequitywh csopresence firmsizewh ROAwh operationcashflowvolatilitywh leveragewh dividendpayoutwh boardsizewh boardindependencewh pension_sizewh durationwh planreturnswh discountratewh mergersaquisitions i.sic i.year , robust vce(cluster ticker )


Im not sue where is the problem

[Carlo Lazzaro]

Hussein:
go -vce(cluster clusterid)- as a good compromise.

[hussein bataineh]

Thanks prof Carlo