diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ActiveNumber.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ActiveNumber.java
index d5a877ba..9a74a816 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ActiveNumber.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ActiveNumber.java
@@ -47,6 +47,7 @@ public interface ActiveNumber {
    * or <code>SE</code>.
    *
    * @return regionCode
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   String getRegionCode();
 
@@ -75,6 +76,7 @@ public interface ActiveNumber {
    * How often the recurring price is charged in months.
    *
    * @return paymentIntervalMonths
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   Integer getPaymentIntervalMonths();
 
@@ -82,6 +84,7 @@ public interface ActiveNumber {
    * The date of the next charge.
    *
    * @return nextChargeDate
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   Instant getNextChargeDate();
 
@@ -89,6 +92,7 @@ public interface ActiveNumber {
    * The timestamp when the subscription will expire if an expiration date has been set.
    *
    * @return expireAt
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   Instant getExpireAt();
 
@@ -158,6 +162,7 @@ interface Builder {
      * @param regionCode see getter
      * @return Current builder
      * @see #getRegionCode
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setRegionCode(String regionCode);
 
@@ -194,6 +199,7 @@ interface Builder {
      * @param paymentIntervalMonths see getter
      * @return Current builder
      * @see #getPaymentIntervalMonths
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setPaymentIntervalMonths(Integer paymentIntervalMonths);
 
@@ -203,6 +209,7 @@ interface Builder {
      * @param nextChargeDate see getter
      * @return Current builder
      * @see #getNextChargeDate
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setNextChargeDate(Instant nextChargeDate);
 
@@ -212,6 +219,7 @@ interface Builder {
      * @param expireAt see getter
      * @return Current builder
      * @see #getExpireAt
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setExpireAt(Instant expireAt);
 
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ActiveNumberImpl.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ActiveNumberImpl.java
index 79badefc..4d26f65f 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ActiveNumberImpl.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ActiveNumberImpl.java
@@ -152,8 +152,7 @@ public String getRegionCode() {
     return regionCode.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_REGION_CODE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<String> regionCode() {
     return regionCode;
   }
@@ -196,8 +195,7 @@ public Integer getPaymentIntervalMonths() {
     return paymentIntervalMonths.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_PAYMENT_INTERVAL_MONTHS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<Integer> paymentIntervalMonths() {
     return paymentIntervalMonths;
   }
@@ -207,8 +205,7 @@ public Instant getNextChargeDate() {
     return nextChargeDate.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_NEXT_CHARGE_DATE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<Instant> nextChargeDate() {
     return nextChargeDate;
   }
@@ -218,8 +215,7 @@ public Instant getExpireAt() {
     return expireAt.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_EXPIRE_AT)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<Instant> expireAt() {
     return expireAt;
   }
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledSmsProvisioning.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledSmsProvisioning.java
index 80b467a8..cfc0c018 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledSmsProvisioning.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledSmsProvisioning.java
@@ -25,6 +25,7 @@ public interface ScheduledSmsProvisioning {
    * The SMS service plan that the scheduled provisioning job will configured with the number.
    *
    * @return servicePlanId
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   String getServicePlanId();
 
@@ -32,6 +33,7 @@ public interface ScheduledSmsProvisioning {
    * TCR campaign ID that the scheduled provisioning job will configure with the number.
    *
    * @return campaignId
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   String getCampaignId();
 
@@ -46,6 +48,7 @@ public interface ScheduledSmsProvisioning {
    * Timestamp when the status was last updated.
    *
    * @return lastUpdatedTime
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   Instant getLastUpdatedTime();
 
@@ -53,6 +56,7 @@ public interface ScheduledSmsProvisioning {
    * Get errorCodes
    *
    * @return errorCodes
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   List<SmsErrorCode> getErrorCodes();
 
@@ -74,6 +78,7 @@ interface Builder {
      * @param servicePlanId see getter
      * @return Current builder
      * @see #getServicePlanId
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setServicePlanId(String servicePlanId);
 
@@ -83,6 +88,7 @@ interface Builder {
      * @param campaignId see getter
      * @return Current builder
      * @see #getCampaignId
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setCampaignId(String campaignId);
 
@@ -101,6 +107,7 @@ interface Builder {
      * @param lastUpdatedTime see getter
      * @return Current builder
      * @see #getLastUpdatedTime
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setLastUpdatedTime(Instant lastUpdatedTime);
 
@@ -110,6 +117,7 @@ interface Builder {
      * @param errorCodes see getter
      * @return Current builder
      * @see #getErrorCodes
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setErrorCodes(List<SmsErrorCode> errorCodes);
 
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledSmsProvisioningImpl.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledSmsProvisioningImpl.java
index 280dae1d..bf4e3970 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledSmsProvisioningImpl.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledSmsProvisioningImpl.java
@@ -63,8 +63,7 @@ public String getServicePlanId() {
     return servicePlanId.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_SERVICE_PLAN_ID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<String> servicePlanId() {
     return servicePlanId;
   }
@@ -74,8 +73,7 @@ public String getCampaignId() {
     return campaignId.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_CAMPAIGN_ID)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<String> campaignId() {
     return campaignId;
   }
@@ -96,8 +94,7 @@ public Instant getLastUpdatedTime() {
     return lastUpdatedTime.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_LAST_UPDATED_TIME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<Instant> lastUpdatedTime() {
     return lastUpdatedTime;
   }
@@ -107,8 +104,7 @@ public List<SmsErrorCode> getErrorCodes() {
     return errorCodes.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_ERROR_CODES)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<List<SmsErrorCode>> errorCodes() {
     return errorCodes;
   }
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioning.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioning.java
index fbec9914..35e3c5ba 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioning.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioning.java
@@ -19,6 +19,7 @@ public interface ScheduledVoiceProvisioning {
    * Timestamp when the status was last updated.
    *
    * @return lastUpdatedTime
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   Instant getLastUpdatedTime();
 
@@ -38,6 +39,7 @@ interface Builder {
      * @param lastUpdatedTime see getter
      * @return Current builder
      * @see #getLastUpdatedTime
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setLastUpdatedTime(Instant lastUpdatedTime);
 
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningEST.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningEST.java
index ac9acf7e..32384b33 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningEST.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningEST.java
@@ -22,6 +22,7 @@ public interface ScheduledVoiceProvisioningEST
    * Timestamp when the status was last updated.
    *
    * @return lastUpdatedTime
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   Instant getLastUpdatedTime();
 
@@ -58,6 +59,7 @@ interface Builder {
      * @param lastUpdatedTime see getter
      * @return Current builder
      * @see #getLastUpdatedTime
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setLastUpdatedTime(Instant lastUpdatedTime);
 
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningESTImpl.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningESTImpl.java
index 825bee00..f50a7cc2 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningESTImpl.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningESTImpl.java
@@ -69,8 +69,7 @@ public Instant getLastUpdatedTime() {
     return lastUpdatedTime.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_LAST_UPDATED_TIME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<Instant> lastUpdatedTime() {
     return lastUpdatedTime;
   }
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningFAX.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningFAX.java
index df4fd6f4..00ccae1c 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningFAX.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningFAX.java
@@ -22,6 +22,7 @@ public interface ScheduledVoiceProvisioningFAX
    * Timestamp when the status was last updated.
    *
    * @return lastUpdatedTime
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   Instant getLastUpdatedTime();
 
@@ -59,6 +60,7 @@ interface Builder
      * @param lastUpdatedTime see getter
      * @return Current builder
      * @see #getLastUpdatedTime
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setLastUpdatedTime(Instant lastUpdatedTime);
 
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningFAXImpl.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningFAXImpl.java
index e196e515..4f4be518 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningFAXImpl.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningFAXImpl.java
@@ -69,8 +69,7 @@ public Instant getLastUpdatedTime() {
     return lastUpdatedTime.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_LAST_UPDATED_TIME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<Instant> lastUpdatedTime() {
     return lastUpdatedTime;
   }
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningRTC.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningRTC.java
index 4498882a..4e7aa0b4 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningRTC.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningRTC.java
@@ -22,6 +22,7 @@ public interface ScheduledVoiceProvisioningRTC
    * Timestamp when the status was last updated.
    *
    * @return lastUpdatedTime
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   Instant getLastUpdatedTime();
 
@@ -59,6 +60,7 @@ interface Builder
      * @param lastUpdatedTime see getter
      * @return Current builder
      * @see #getLastUpdatedTime
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setLastUpdatedTime(Instant lastUpdatedTime);
 
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningRTCImpl.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningRTCImpl.java
index d5eaf292..9599fdbb 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningRTCImpl.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/ScheduledVoiceProvisioningRTCImpl.java
@@ -69,8 +69,7 @@ public Instant getLastUpdatedTime() {
     return lastUpdatedTime.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_LAST_UPDATED_TIME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<Instant> lastUpdatedTime() {
     return lastUpdatedTime;
   }
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfiguration.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfiguration.java
index c154eb16..9c1bebdf 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfiguration.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfiguration.java
@@ -19,6 +19,7 @@ public interface VoiceConfiguration {
    * Timestamp when the status was last updated.
    *
    * @return lastUpdatedTime
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   Instant getLastUpdatedTime();
 
@@ -38,6 +39,7 @@ interface Builder {
      * @param lastUpdatedTime see getter
      * @return Current builder
      * @see #getLastUpdatedTime
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setLastUpdatedTime(Instant lastUpdatedTime);
 
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationEST.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationEST.java
index bfc85482..fefe0bd6 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationEST.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationEST.java
@@ -22,6 +22,7 @@ public interface VoiceConfigurationEST
    * Timestamp when the status was last updated.
    *
    * @return lastUpdatedTime
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   Instant getLastUpdatedTime();
 
@@ -58,6 +59,7 @@ interface Builder {
      * @param lastUpdatedTime see getter
      * @return Current builder
      * @see #getLastUpdatedTime
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setLastUpdatedTime(Instant lastUpdatedTime);
 
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationESTImpl.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationESTImpl.java
index 6cec6760..4c72e781 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationESTImpl.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationESTImpl.java
@@ -69,8 +69,7 @@ public Instant getLastUpdatedTime() {
     return lastUpdatedTime.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_LAST_UPDATED_TIME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<Instant> lastUpdatedTime() {
     return lastUpdatedTime;
   }
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationFAX.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationFAX.java
index d0283e33..28a2540d 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationFAX.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationFAX.java
@@ -22,6 +22,7 @@ public interface VoiceConfigurationFAX
    * Timestamp when the status was last updated.
    *
    * @return lastUpdatedTime
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   Instant getLastUpdatedTime();
 
@@ -58,6 +59,7 @@ interface Builder {
      * @param lastUpdatedTime see getter
      * @return Current builder
      * @see #getLastUpdatedTime
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setLastUpdatedTime(Instant lastUpdatedTime);
 
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationFAXImpl.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationFAXImpl.java
index 0ac53ea7..2efd7de6 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationFAXImpl.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationFAXImpl.java
@@ -69,8 +69,7 @@ public Instant getLastUpdatedTime() {
     return lastUpdatedTime.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_LAST_UPDATED_TIME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<Instant> lastUpdatedTime() {
     return lastUpdatedTime;
   }
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationRTC.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationRTC.java
index a6e50555..44c4f93d 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationRTC.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationRTC.java
@@ -22,6 +22,7 @@ public interface VoiceConfigurationRTC
    * Timestamp when the status was last updated.
    *
    * @return lastUpdatedTime
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   Instant getLastUpdatedTime();
 
@@ -58,6 +59,7 @@ interface Builder {
      * @param lastUpdatedTime see getter
      * @return Current builder
      * @see #getLastUpdatedTime
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setLastUpdatedTime(Instant lastUpdatedTime);
 
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationRTCImpl.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationRTCImpl.java
index 6442503b..9b952392 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationRTCImpl.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/VoiceConfigurationRTCImpl.java
@@ -69,8 +69,7 @@ public Instant getLastUpdatedTime() {
     return lastUpdatedTime.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_LAST_UPDATED_TIME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<Instant> lastUpdatedTime() {
     return lastUpdatedTime;
   }
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/regions/available/response/AvailableRegion.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/regions/available/response/AvailableRegion.java
index b4bed8d6..6cf52e17 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/regions/available/response/AvailableRegion.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/regions/available/response/AvailableRegion.java
@@ -22,6 +22,7 @@ public interface AvailableRegion {
    * ISO 3166-1 alpha-2 region code. Examples: <code>US</code>, <code>GB</code> or <code>SE</code>.
    *
    * @return regionCode
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   String getRegionCode();
 
@@ -29,6 +30,7 @@ public interface AvailableRegion {
    * Display name of the region. Examples: United States, United Kingdom or Sweden.
    *
    * @return regionName
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   String getRegionName();
 
@@ -37,6 +39,7 @@ public interface AvailableRegion {
    * </code>.
    *
    * @return types
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   List<NumberType> getTypes();
 
@@ -58,6 +61,7 @@ interface Builder {
      * @param regionCode see getter
      * @return Current builder
      * @see #getRegionCode
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setRegionCode(String regionCode);
 
@@ -67,6 +71,7 @@ interface Builder {
      * @param regionName see getter
      * @return Current builder
      * @see #getRegionName
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setRegionName(String regionName);
 
@@ -76,6 +81,7 @@ interface Builder {
      * @param types see getter
      * @return Current builder
      * @see #getTypes
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setTypes(List<NumberType> types);
 
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/regions/available/response/AvailableRegionImpl.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/regions/available/response/AvailableRegionImpl.java
index f461417a..3782eb78 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/regions/available/response/AvailableRegionImpl.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/regions/available/response/AvailableRegionImpl.java
@@ -49,8 +49,7 @@ public String getRegionCode() {
     return regionCode.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_REGION_CODE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<String> regionCode() {
     return regionCode;
   }
@@ -60,8 +59,7 @@ public String getRegionName() {
     return regionName.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_REGION_NAME)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<String> regionName() {
     return regionName;
   }
@@ -71,8 +69,7 @@ public List<NumberType> getTypes() {
     return types.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_TYPES)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<List<NumberType>> types() {
     return types;
   }
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/response/AvailableNumber.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/response/AvailableNumber.java
index 8e4ac653..c4e772ed 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/response/AvailableNumber.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/response/AvailableNumber.java
@@ -30,6 +30,7 @@ public interface AvailableNumber {
    * leading <code>+</code>.
    *
    * @return phoneNumber
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   String getPhoneNumber();
 
@@ -38,6 +39,7 @@ public interface AvailableNumber {
    * or <code>SE</code>.
    *
    * @return regionCode
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   String getRegionCode();
 
@@ -73,6 +75,7 @@ public interface AvailableNumber {
    * How often the recurring price is charged in months.
    *
    * @return paymentIntervalMonths
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   Integer getPaymentIntervalMonths();
 
@@ -80,6 +83,7 @@ public interface AvailableNumber {
    * Whether or not supplementary documentation will be required to complete the number rental.
    *
    * @return supportingDocumentationRequired
+   * @readOnly <em>This field is returned by the server and cannot be modified</em>
    */
   Boolean getSupportingDocumentationRequired();
 
@@ -101,6 +105,7 @@ interface Builder {
      * @param phoneNumber see getter
      * @return Current builder
      * @see #getPhoneNumber
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setPhoneNumber(String phoneNumber);
 
@@ -110,6 +115,7 @@ interface Builder {
      * @param regionCode see getter
      * @return Current builder
      * @see #getRegionCode
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setRegionCode(String regionCode);
 
@@ -155,6 +161,7 @@ interface Builder {
      * @param paymentIntervalMonths see getter
      * @return Current builder
      * @see #getPaymentIntervalMonths
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setPaymentIntervalMonths(Integer paymentIntervalMonths);
 
@@ -164,6 +171,7 @@ interface Builder {
      * @param supportingDocumentationRequired see getter
      * @return Current builder
      * @see #getSupportingDocumentationRequired
+     * @readOnly <em>This field is returned by the server and cannot be modified</em>
      */
     Builder setSupportingDocumentationRequired(Boolean supportingDocumentationRequired);
 
diff --git a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/response/AvailableNumberImpl.java b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/response/AvailableNumberImpl.java
index 4d2b5cfd..58a99c93 100644
--- a/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/response/AvailableNumberImpl.java
+++ b/openapi-contracts/src/main/com/sinch/sdk/domains/numbers/models/v1/response/AvailableNumberImpl.java
@@ -87,8 +87,7 @@ public String getPhoneNumber() {
     return phoneNumber.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_PHONE_NUMBER)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<String> phoneNumber() {
     return phoneNumber;
   }
@@ -98,8 +97,7 @@ public String getRegionCode() {
     return regionCode.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_REGION_CODE)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<String> regionCode() {
     return regionCode;
   }
@@ -153,8 +151,7 @@ public Integer getPaymentIntervalMonths() {
     return paymentIntervalMonths.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_PAYMENT_INTERVAL_MONTHS)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<Integer> paymentIntervalMonths() {
     return paymentIntervalMonths;
   }
@@ -164,8 +161,7 @@ public Boolean getSupportingDocumentationRequired() {
     return supportingDocumentationRequired.orElse(null);
   }
 
-  @JsonProperty(JSON_PROPERTY_SUPPORTING_DOCUMENTATION_REQUIRED)
-  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
+  @JsonIgnore
   public OptionalValue<Boolean> supportingDocumentationRequired() {
     return supportingDocumentationRequired;
   }