diff --git a/openstack/compute/v2/extensions/schedulerhints/requests.go b/openstack/compute/v2/extensions/schedulerhints/requests.go
index d9aa733..5713e72 100644
--- a/openstack/compute/v2/extensions/schedulerhints/requests.go
+++ b/openstack/compute/v2/extensions/schedulerhints/requests.go
@@ -1,11 +1,11 @@
 package schedulerhints
 
 import (
-	"fmt"
 	"net"
 	"regexp"
 	"strings"
 
+	"github.com/gophercloud/gophercloud"
 	"github.com/gophercloud/gophercloud/openstack/compute/v2/servers"
 )
 
@@ -47,7 +47,12 @@
 
 	if opts.Group != "" {
 		if !uuidRegex.MatchString(opts.Group) {
-			return nil, fmt.Errorf("Group must be a UUID")
+			err := gophercloud.ErrInvalidInput{}
+			err.Function = "schedulerhints.ToServerSchedulerHintsMap"
+			err.Argument = "schedulerhints.SchedulerHints.Group"
+			err.Value = opts.Group
+			err.Info = "Group must be a UUID"
+			return nil, err
 		}
 		sh["group"] = opts.Group
 	}
@@ -55,7 +60,12 @@
 	if len(opts.DifferentHost) > 0 {
 		for _, diffHost := range opts.DifferentHost {
 			if !uuidRegex.MatchString(diffHost) {
-				return nil, fmt.Errorf("The hosts in DifferentHost must be in UUID format.")
+				err := gophercloud.ErrInvalidInput{}
+				err.Function = "schedulerhints.ToServerSchedulerHintsMap"
+				err.Argument = "schedulerhints.SchedulerHints.DifferentHost"
+				err.Value = opts.DifferentHost
+				err.Info = "The hosts must be in UUID format."
+				return nil, err
 			}
 		}
 		sh["different_host"] = opts.DifferentHost
@@ -64,7 +74,12 @@
 	if len(opts.SameHost) > 0 {
 		for _, sameHost := range opts.SameHost {
 			if !uuidRegex.MatchString(sameHost) {
-				return nil, fmt.Errorf("The hosts in SameHost must be in UUID format.")
+				err := gophercloud.ErrInvalidInput{}
+				err.Function = "schedulerhints.ToServerSchedulerHintsMap"
+				err.Argument = "schedulerhints.SchedulerHints.SameHost"
+				err.Value = opts.SameHost
+				err.Info = "The hosts must be in UUID format."
+				return nil, err
 			}
 		}
 		sh["same_host"] = opts.SameHost
@@ -83,7 +98,12 @@
 	*/
 	if len(opts.Query) > 0 {
 		if len(opts.Query) < 3 {
-			return nil, fmt.Errorf("Query must be a conditional statement in the format of [op,variable,value]")
+			err := gophercloud.ErrInvalidInput{}
+			err.Function = "schedulerhints.ToServerSchedulerHintsMap"
+			err.Argument = "schedulerhints.SchedulerHints.Query"
+			err.Value = opts.Query
+			err.Info = "Must be a conditional statement in the format of [op,variable,value]"
+			return nil, err
 		}
 		sh["query"] = opts.Query
 	}
@@ -94,7 +114,12 @@
 
 	if opts.BuildNearHostIP != "" {
 		if _, _, err := net.ParseCIDR(opts.BuildNearHostIP); err != nil {
-			return nil, fmt.Errorf("BuildNearHostIP must be a valid subnet in the form 192.168.1.1/24")
+			err := gophercloud.ErrInvalidInput{}
+			err.Function = "schedulerhints.ToServerSchedulerHintsMap"
+			err.Argument = "schedulerhints.SchedulerHints.BuildNearHostIP"
+			err.Value = opts.BuildNearHostIP
+			err.Info = "Must be a valid subnet in the form 192.168.1.1/24"
+			return nil, err
 		}
 		ipParts := strings.Split(opts.BuildNearHostIP, "/")
 		sh["build_near_host_ip"] = ipParts[0]