diff --git a/models/resources/data/data.go b/models/resources/data/data.go
index 72bf213..e911385 100644
--- a/models/resources/data/data.go
+++ b/models/resources/data/data.go
@@ -10,8 +10,8 @@ import (
 type DataResource struct {
 	resources.AbstractResource
 	Protocols []string `json:"protocol,omitempty" bson:"protocol,omitempty"` //TODO Enum type
-	DataType  string   `json:"datatype,omitempty" bson:"datatype"`
-	Example   string   `json:"example,omitempty" bson:"example" description:"base64 encoded data"`
+	DataType  string   `json:"datatype,omitempty" bson:"datatype,omitempty"`
+	Example   string   `json:"example,omitempty" bson:"example,omitempty" description:"base64 encoded data"`
 }
 
 func (dma *DataResource) Deserialize(j map[string]interface{}) utils.DBObject {
diff --git a/models/resources/datacenter/datacenter.go b/models/resources/datacenter/datacenter.go
index 0419bca..e8233ba 100644
--- a/models/resources/datacenter/datacenter.go
+++ b/models/resources/datacenter/datacenter.go
@@ -9,7 +9,7 @@ import (
 
 type DatacenterResource struct {
 	resources.AbstractResource
-	BookingPrice int `bson:"booking_price" json:"booking_price,omitempty"`
+	BookingPrice int `bson:"booking_price,omitempty" json:"booking_price,omitempty"`
 
 	CPU *DatacenterCpuModel    `bson:"cpu,omitempty" json:"cpu,omitempty"`
 	RAM *DatacenterMemoryModel `bson:"ram,omitempty" json:"ram,omitempty"`
diff --git a/models/resources/resource.go b/models/resources/resource.go
index cd58b55..eac5cdd 100644
--- a/models/resources/resource.go
+++ b/models/resources/resource.go
@@ -16,12 +16,12 @@ type Resource interface {
 
 type AbstractResource struct {
 	utils.AbstractObject
-	ShortDescription string `json:"short_description" bson:"short_description" validate:"required"`
-	Description      string `json:"description,omitempty" bson:"description"`
-	Logo             string `json:"logo" bson:"logo" validate:"required"`
-	Owner            string `json:"owner" bson:"owner" validate:"required"`
-	OwnerLogo        string `json:"owner_logo" bson:"owner_logo"`
-	SourceUrl        string `json:"source_url" bson:"source_url" validate:"required"`
+	ShortDescription string `json:"short_description,omitempty" bson:"short_description,omitempty" validate:"required"`
+	Description      string `json:"description,omitempty" bson:"description,omitempty"`
+	Logo             string `json:"logo,omitempty" bson:"logo,omitempty" validate:"required"`
+	Owner            string `json:"owner,omitempty" bson:"owner,omitempty" validate:"required"`
+	OwnerLogo        string `json:"owner_logo,omitempty" bson:"owner_logo,omitempty"`
+	SourceUrl        string `json:"source_url,omitempty" bson:"source_url,omitempty" validate:"required"`
 }
 
 func (r *AbstractResource) GetID() string {
diff --git a/models/resources/storage/storage.go b/models/resources/storage/storage.go
index e1428f3..8906823 100644
--- a/models/resources/storage/storage.go
+++ b/models/resources/storage/storage.go
@@ -8,8 +8,8 @@ import (
 )
 
 type URL struct {
-	Protocol string `bson:"protocol,omitempty" json:"protocol"`
-	Path     string `bson:"path,omitempty" json:"path"`
+	Protocol string `bson:"protocol,omitempty" json:"protocol,omitempty"`
+	Path     string `bson:"path,omitempty" json:"path,omitempty"`
 }
 
 type StorageResource struct {
diff --git a/models/utils/abstracts.go b/models/utils/abstracts.go
index 7e82a70..5c460c0 100644
--- a/models/utils/abstracts.go
+++ b/models/utils/abstracts.go
@@ -11,8 +11,8 @@ import (
 var validate = validator.New(validator.WithRequiredStructEnabled())
 
 type AbstractObject struct {
-	UUID string `json:"id" required:"true" bson:"id" validate:"required"`
-	Name string `json:"name" required:"true" bson:"name" validate:"required"`
+	UUID string `json:"id,omitempty" bson:"id,omitempty" validate:"required"`
+	Name string `json:"name,omitempty" bson:"name,omitempty" validate:"required"`
 }
 
 func (ao *AbstractObject) GetID() string {