The same loci for XP-EHH by Selscan

Question

[Victor]

Hello, I try to use selscan to compute the value of xpehh by selscan. But when I try to run it. I got the error message about the two dataset need have same loci?

I am not sure what is the same mean and how to make the same loci from two populations for XPEHH process by SELSCAN?

I feed the vcf files which were produced by plink to selscan. Can anyone have suggestions?

Thanks