https://crm.zoho.com/crm/private/json/Potentials/getRelatedRecords?authtoken='+AUTHTOKEN_ZOHO+'&scope=crmapi&parentModule=Leads&id='+str(leadid)

and I'm getting an error code 4401 that reads "Unable to populate data, please check if mandatory value is entered correctly."

Am I able to get related Potentials?

Is my url wrong?