求各位大神帮帮忙，也使用了destring EventID, replace 进行转换，还是不行，还是报错

. use stk_ma_tradingmain_2023new, clear

.
. duplicates drop EventID, force

Duplicates in terms of EventID

(14,766 observations deleted)

.
. merge 1:1 EventID using Stkcds, nogen keep(1 3)
key variable EventID is str12 in master but double in using data
    Each key variable -- the variables on which observations are matched -- must be of the same generic type in the master and using
    datasets.  Same generic type means both numeric or both string.
r(106);