firstly what is that parameter datatype :
[{"key":"Vendor_ID","constraint_type":"in","value":["1710073189244x875357981663035400","1709998924280x846186801840521200"]}]
when implement this parameter this error become
Current API endpoint is misconfigured.
Details: Variables specified in brackets in URL paths, headers, or parameters must be defined in the "Query Parameters" section.
Missing variables: constrains, {"key":"Vendor_ID","constraint_type":"in","value":["1710073189244x875357981663035400","1709998924280x846186801840521200", "1710073189244x875357981663035400","1709998924280x846186801840521200"]}.