Limit field errors to a single field name

pkg/api/validation/validation.go

@@ -223,7 +223,9 @@ func ValidateObjectMeta(meta *api.ObjectMeta, requiresNamespace bool, nameFn Val
 	// report it here. This may confuse users, but indicates a programming bug and still must be validated.
 	// If there are multiple fields out of which one is required then add a or as a separator
 	if len(meta.Name) == 0 {
-		allErrs = append(allErrs, errs.NewFieldRequired("name or generateName"))
+		requiredErr := errs.NewFieldRequired("name")
+		requiredErr.Detail = "name or generateName is required"
+		allErrs = append(allErrs, requiredErr)
 	} else {
 		if ok, qualifier := nameFn(meta.Name, false); !ok {
 			allErrs = append(allErrs, errs.NewFieldInvalid("name", meta.Name, qualifier))