chargebee · cb-alish · Jul 21, 2026 · Jul 21, 2026
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,3 +1,85 @@
+### v3.51.0 (2026-07-21)
+* * *
+### New Resources:
+- [`AsyncResponse`](https://apidocs.chargebee.com/docs/api/async_responses) has been added.
+- [`AsyncResponseList`](https://apidocs.chargebee.com/docs/api/async_response_lists) has been added.
+- [`ColumnDefinition`](https://apidocs.chargebee.com/docs/api/column_definitions) has been added.
+- [`Meter`](https://apidocs.chargebee.com/docs/api/meters) has been added.
+- [`MeteredFeature`](https://apidocs.chargebee.com/docs/api/metered_features) has been added.
+
+
+### New Attributes:
+- [`currency_code`](https://apidocs.chargebee.com/docs/api/alerts/alert-object#currency_code) has been added to [`Alert`](https://apidocs.chargebee.com/docs/api/alerts).
+- [`threshold`](https://apidocs.chargebee.com/docs/api/alerts/alert-object#threshold) has been added to [`Alert`](https://apidocs.chargebee.com/docs/api/alerts).
+- [`filter_conditions`](https://apidocs.chargebee.com/docs/api/alerts/alert-object#filter_conditions) has been added to [`Alert`](https://apidocs.chargebee.com/docs/api/alerts).
+- [`exchange_rates`](https://apidocs.chargebee.com/docs/api/credit_notes/credit-note-object#exchange_rates) has been added to [`CreditNote`](https://apidocs.chargebee.com/docs/api/credit_notes).
+- [`metered`](https://apidocs.chargebee.com/docs/api/features/feature-object#metered) has been added to [`Feature`](https://apidocs.chargebee.com/docs/api/features).
+- [`exchange_rates`](https://apidocs.chargebee.com/docs/api/invoices/invoice-object#exchange_rates) has been added to [`Invoice`](https://apidocs.chargebee.com/docs/api/invoices).
+- [`payment_intent_metadata`](https://apidocs.chargebee.com/docs/api/payment_intents/payment-intent-object#payment_intent_metadata) has been added to [`PaymentIntent`](https://apidocs.chargebee.com/docs/api/payment_intents).
+
+
+### New Parameters:
+- [`metered`](https://apidocs.chargebee.com/docs/api/features/list-features#metered) has been added as query parameter to [`list_features`](https://apidocs.chargebee.com/docs/api/features/list-features) in [`Feature`](https://apidocs.chargebee.com/docs/api/features).
+- [`decommissioned`](https://apidocs.chargebee.com/docs/api/subscriptions/list-subscriptions#decommissioned) has been added as query parameter to [`list_subscriptions`](https://apidocs.chargebee.com/docs/api/subscriptions/list-subscriptions) in [`Subscription`](https://apidocs.chargebee.com/docs/api/subscriptions).
+- [`currency_code`](https://apidocs.chargebee.com/docs/api/alerts/create-an-alert#currency_code) has been added as request body parameter to [`create_an_alert`](https://apidocs.chargebee.com/docs/api/alerts/create-an-alert) in [`Alert`](https://apidocs.chargebee.com/docs/api/alerts).
+- [`line_items.proration_mode`](https://apidocs.chargebee.com/docs/api/credit_notes/import-credit-note#line_items_proration_mode) has been added as request body parameter to [`import_credit_note`](https://apidocs.chargebee.com/docs/api/credit_notes/import-credit-note) in [`CreditNote`](https://apidocs.chargebee.com/docs/api/credit_notes).
+- [`item_prices.description`](https://apidocs.chargebee.com/docs/api/estimates/create-invoice-for-items-estimate#item_prices_description) has been added as request body parameter to [`create_invoice_for_items_estimate`](https://apidocs.chargebee.com/docs/api/estimates/create-invoice-for-items-estimate) in [`Estimate`](https://apidocs.chargebee.com/docs/api/estimates).
+- [`item_prices.entity_description`](https://apidocs.chargebee.com/docs/api/estimates/create-invoice-for-items-estimate#item_prices_entity_description) has been added as request body parameter to [`create_invoice_for_items_estimate`](https://apidocs.chargebee.com/docs/api/estimates/create-invoice-for-items-estimate) in [`Estimate`](https://apidocs.chargebee.com/docs/api/estimates).
+- [`charges.entity_description`](https://apidocs.chargebee.com/docs/api/estimates/create-invoice-for-items-estimate#charges_entity_description) has been added as request body parameter to [`create_invoice_for_items_estimate`](https://apidocs.chargebee.com/docs/api/estimates/create-invoice-for-items-estimate) in [`Estimate`](https://apidocs.chargebee.com/docs/api/estimates).
+- [`subscription.decommissioned`](https://apidocs.chargebee.com/docs/api/exports/export-subscriptions#subscription_decommissioned) has been added as request body parameter to [`export_subscriptions`](https://apidocs.chargebee.com/docs/api/exports/export-subscriptions) in [`Export`](https://apidocs.chargebee.com/docs/api/exports).
+- [`item_prices.description`](https://apidocs.chargebee.com/docs/api/invoices/create-invoice-for-items-and-one-time-charges#item_prices_description) has been added as request body parameter to [`create_invoice_for_items_and_one-time_charges`](https://apidocs.chargebee.com/docs/api/invoices/create-invoice-for-items-and-one-time-charges) in [`Invoice`](https://apidocs.chargebee.com/docs/api/invoices).
+- [`item_prices.entity_description`](https://apidocs.chargebee.com/docs/api/invoices/create-invoice-for-items-and-one-time-charges#item_prices_entity_description) has been added as request body parameter to [`create_invoice_for_items_and_one-time_charges`](https://apidocs.chargebee.com/docs/api/invoices/create-invoice-for-items-and-one-time-charges) in [`Invoice`](https://apidocs.chargebee.com/docs/api/invoices).
+- [`charges.entity_description`](https://apidocs.chargebee.com/docs/api/invoices/create-invoice-for-items-and-one-time-charges#charges_entity_description) has been added as request body parameter to [`create_invoice_for_items_and_one-time_charges`](https://apidocs.chargebee.com/docs/api/invoices/create-invoice-for-items-and-one-time-charges) in [`Invoice`](https://apidocs.chargebee.com/docs/api/invoices).
+- [`create_pending_invoice`](https://apidocs.chargebee.com/docs/api/invoices/create-invoice-for-items-and-one-time-charges#create_pending_invoice) has been added as request body parameter to [`create_invoice_for_items_and_one-time_charges`](https://apidocs.chargebee.com/docs/api/invoices/create-invoice-for-items-and-one-time-charges) in [`Invoice`](https://apidocs.chargebee.com/docs/api/invoices).
+- [`line_items.proration_mode`](https://apidocs.chargebee.com/docs/api/invoices/import-invoice#line_items_proration_mode) has been added as request body parameter to [`import_invoice`](https://apidocs.chargebee.com/docs/api/invoices/import-invoice) in [`Invoice`](https://apidocs.chargebee.com/docs/api/invoices).
+- [`paid_at`](https://apidocs.chargebee.com/docs/api/invoices/import-invoice#paid_at) has been added as request body parameter to [`import_invoice`](https://apidocs.chargebee.com/docs/api/invoices/import-invoice) in [`Invoice`](https://apidocs.chargebee.com/docs/api/invoices).
+- [`discounts_to_add.quantity`](https://apidocs.chargebee.com/docs/api/ramps/create-a-ramp#discounts_to_add_quantity) has been added as request body parameter to [`create_a_ramp`](https://apidocs.chargebee.com/docs/api/ramps/create-a-ramp) in [`Ramp`](https://apidocs.chargebee.com/docs/api/ramps).
+- [`discounts_to_add.quantity`](https://apidocs.chargebee.com/docs/api/ramps/update-a-subscription-ramp#discounts_to_add_quantity) has been added as request body parameter to [`update_a_subscription_ramp`](https://apidocs.chargebee.com/docs/api/ramps/update-a-subscription-ramp) in [`Ramp`](https://apidocs.chargebee.com/docs/api/ramps).
+- [`customer.email`](https://apidocs.chargebee.com/docs/api/recorded_purchases/record-a-purchase#customer_email) has been added as request body parameter to [`record_a_purchase`](https://apidocs.chargebee.com/docs/api/recorded_purchases/record-a-purchase) in [`RecordedPurchase`](https://apidocs.chargebee.com/docs/api/recorded_purchases).
+- [`customer.first_name`](https://apidocs.chargebee.com/docs/api/recorded_purchases/record-a-purchase#customer_first_name) has been added as request body parameter to [`record_a_purchase`](https://apidocs.chargebee.com/docs/api/recorded_purchases/record-a-purchase) in [`RecordedPurchase`](https://apidocs.chargebee.com/docs/api/recorded_purchases).
+- [`customer.last_name`](https://apidocs.chargebee.com/docs/api/recorded_purchases/record-a-purchase#customer_last_name) has been added as request body parameter to [`record_a_purchase`](https://apidocs.chargebee.com/docs/api/recorded_purchases/record-a-purchase) in [`RecordedPurchase`](https://apidocs.chargebee.com/docs/api/recorded_purchases).
+
+
+### Parameter Updates:
+- [`metered_feature_id`](https://apidocs.chargebee.com/docs/api/alerts/create-an-alert#metered_feature_id) has been changed from required to optional in [`create_an_alert`](https://apidocs.chargebee.com/docs/api/alerts/create-an-alert) of [`Alert`](https://apidocs.chargebee.com/docs/api/alerts).
+
+
+### New Events:
+- [`payment_source_business_entity_changed`](https://apidocs.chargebee.com/docs/api/events/webhook/payment_source_business_entity_changed) has been added.
+
+
+### Deleted Attributes:
+- `start_balance` has been removed from [`LedgerOperation`](https://apidocs.chargebee.com/docs/api/ledger_operations).
+- `end_balance` has been removed from [`LedgerOperation`](https://apidocs.chargebee.com/docs/api/ledger_operations).
+
+
+### New Enums:
+- `real_time_payments` has been added as a new value enum `DunningType`.
+- `payment_source_business_entity_changed` has been added as a new value enum `EventType`.
+- `paynow`, `bizum`, and `promptpay` have been added as new values enum `PaymentMethod`.
+- `paynow`, `bizum`, and `promptpay` have been added as new values enum `PaymentMethodType`.
+- `active`, `archived`, and `deleted` have been added as new values enum `Status`.
+- `zero_rated`, `region_non_taxable`, `product_exempt`, `high_value_physical_goods`, `zero_value_item`, and `tax_not_configured_external_provider` have been added as new values enum `TaxOverrideReason`.
+- `paynow`, `bizum`, `promptpay`, `simple`, `compound`, and `spend_exceeded` have been added as new values enum `Type`.
+- `success` and `failed` have been added as new values to enum attribute [`status`](https://apidocs.chargebee.com/docs/api/async_responses/async-response-object#status) in [`AsyncResponse`](https://apidocs.chargebee.com/docs/api/async_responses).
+- `number` and `string` have been added as new values to enum attribute [`data_type`](https://apidocs.chargebee.com/docs/api/column_definitions/column-definition-object#data_type) in [`ColumnDefinition`](https://apidocs.chargebee.com/docs/api/column_definitions).
+- `simple` and `compound` have been added as new values to enum attribute [`type`](https://apidocs.chargebee.com/docs/api/meters/meter-object#type) in [`Meter`](https://apidocs.chargebee.com/docs/api/meters).
+- `active`, `archived`, and `deleted` have been added as new values to enum attribute [`status`](https://apidocs.chargebee.com/docs/api/meters/meter-object#status) in [`Meter`](https://apidocs.chargebee.com/docs/api/meters).
+- `paynow`, `bizum`, and `promptpay` have been added as new values to enum attribute [`payment_method_type`](https://apidocs.chargebee.com/docs/api/payment_intents/payment-intent-object#payment_method_type) in [`PaymentIntent`](https://apidocs.chargebee.com/docs/api/payment_intents).
+- `paynow`, `bizum`, and `promptpay` have been added as new values to enum attribute [`active_payment_attempt.payment_method_type`](https://apidocs.chargebee.com/docs/api/payment_intents/payment-intent-object#active_payment_attempt_payment_method_type) in [`PaymentIntent`](https://apidocs.chargebee.com/docs/api/payment_intents).
+- `cb_js`, `components_fields`, `checkout_v3`, `paynow_v3`, `portal_v3`, `gift_v3`, `checkout_v4`, `payment_component`, `pc_inapp_v4`, and `pc_fpc_v4` have been added as new values to enum attribute [`payment_intent_metadata.source`](https://apidocs.chargebee.com/docs/api/payment_intents/payment-intent-object#payment_intent_metadata_source) in [`PaymentIntent`](https://apidocs.chargebee.com/docs/api/payment_intents).
+- `adjusted_term`, `service_period_revision`, `delta`, and `reset` have been added as new values to enum request body parameter `line_items.proration_mode` in [`import_credit_note`](https://apidocs.chargebee.com/docs/api/credit_notes/import-credit-note) of [`CreditNote`](https://apidocs.chargebee.com/docs/api/credit_notes).
+- `true` and `false` have been added as new values to enum query parameter `metered.is` in [`list_features`](https://apidocs.chargebee.com/docs/api/features/list-features) of [`Feature`](https://apidocs.chargebee.com/docs/api/features).
+- `adjusted_term`, `service_period_revision`, `delta`, and `reset` have been added as new values to enum request body parameter `line_items.proration_mode` in [`import_invoice`](https://apidocs.chargebee.com/docs/api/invoices/import-invoice) of [`Invoice`](https://apidocs.chargebee.com/docs/api/invoices).
+- `updated_at`, `name`, `created_at`, and `id` have been added as new values to enum query parameter `sort_by.asc` in [`list_all_available_meters`](https://apidocs.chargebee.com/docs/api/meters/list-all-available-meters) of [`Meter`](https://apidocs.chargebee.com/docs/api/meters).
+- `updated_at`, `name`, `created_at`, and `id` have been added as new values to enum query parameter `sort_by.desc` in [`list_all_available_meters`](https://apidocs.chargebee.com/docs/api/meters/list-all-available-meters) of [`Meter`](https://apidocs.chargebee.com/docs/api/meters).
+- `number` and `string` have been added as new values to enum request body parameter `column_definitions.data_type` in [`create_a_metered_feature`](https://apidocs.chargebee.com/docs/api/metered_features/create-a-metered-feature) of [`MeteredFeature`](https://apidocs.chargebee.com/docs/api/metered_features).
+- `paynow`, `bizum`, and `promptpay` have been added as new values to enum request body parameter `payment_method_type` in [`update_a_payment_intent`](https://apidocs.chargebee.com/docs/api/payment_intents/update-a-payment-intent) of [`PaymentIntent`](https://apidocs.chargebee.com/docs/api/payment_intents).
+- `paynow`, `bizum`, and `promptpay` have been added as new values to enum request body parameter `payment_method_type` in [`create_a_payment_intent`](https://apidocs.chargebee.com/docs/api/payment_intents/create-a-payment-intent) of [`PaymentIntent`](https://apidocs.chargebee.com/docs/api/payment_intents).
+- `true` and `false` have been added as new values to enum query parameter `decommissioned.is` in [`list_subscriptions`](https://apidocs.chargebee.com/docs/api/subscriptions/list-subscriptions) of [`Subscription`](https://apidocs.chargebee.com/docs/api/subscriptions).
+
+
+
 ### v3.50.0 (2026-06-22)
 * * *
 ### Bug Fixes:

diff --git a/VERSION b/VERSION
@@ -1 +1 @@
-3.50.0
+3.51.0
diff --git a/pom.xml b/pom.xml
@@ -4,7 +4,7 @@
 
     <groupId>com.chargebee</groupId>
     <artifactId>chargebee-java</artifactId>
-    <version>3.50.0</version>
+    <version>3.51.0</version>
 
 
     <packaging>jar</packaging>

diff --git a/src/main/java/com/chargebee/Environment.java b/src/main/java/com/chargebee/Environment.java
@@ -38,7 +38,7 @@ public class Environment {
 
     public static final String API_VERSION = "v2";
 
-    public static final String LIBRARY_VERSION = "3.50.0";
+    public static final String LIBRARY_VERSION = "3.51.0";
 
     private final String apiBaseUrl;
 

diff --git a/src/main/java/com/chargebee/internal/ResultBase.java b/src/main/java/com/chargebee/internal/ResultBase.java
@@ -16,6 +16,14 @@ public ResultBase(JSONObject jsonObj) {
     }
 
 
+    public AsyncResponseList asyncResponseList() {
+        return (AsyncResponseList)get("async_response_list");
+    }
+
+    public AsyncResponse asyncResponse() {
+        return (AsyncResponse)get("async_response");
+    }
+
     public Subscription subscription() {
         return (Subscription)get("subscription");
     }
@@ -356,10 +364,18 @@ public Rule rule() {
         return (Rule)get("rule");
     }
 
+    public Meter meter() {
+        return (Meter)get("meter");
+    }
+
     public UsageEvent usageEvent() {
         return (UsageEvent)get("usage_event");
     }
 
+    public MeteredFeature meteredFeature() {
+        return (MeteredFeature)get("metered_feature");
+    }
+
     public UsageFile usageFile() {
         return (UsageFile)get("usage_file");
     }

diff --git a/src/main/java/com/chargebee/models/Alert.java b/src/main/java/com/chargebee/models/Alert.java
@@ -20,6 +20,52 @@ public enum Status {
         java-client version incompatibility. We suggest you to upgrade to the latest version */
     }
 
+    public static class Threshold extends Resource<Threshold> {
+        public Threshold(JSONObject jsonObj) {
+            super(jsonObj);
+        }
+
+        public Mode mode() {
+            return reqEnum("mode", Mode.class);
+        }
+
+        public Double value() {
+            return reqDouble("value");
+        }
+
+    }
+
+    public static class FilterCondition extends Resource<FilterCondition> {
+        public enum Field {
+             PLAN_PRICE_ID,
+            _UNKNOWN; /*Indicates unexpected value for this enum. You can get this when there is a
+            java-client version incompatibility. We suggest you to upgrade to the latest version */ 
+        }
+
+        public enum Operator {
+             EQUALS,NOT_EQUALS,
+            _UNKNOWN; /*Indicates unexpected value for this enum. You can get this when there is a
+            java-client version incompatibility. We suggest you to upgrade to the latest version */ 
+        }
+
+        public FilterCondition(JSONObject jsonObj) {
+            super(jsonObj);
+        }
+
+        public Field field() {
+            return reqEnum("field", Field.class);
+        }
+
+        public Operator operator() {
+            return reqEnum("operator", Operator.class);
+        }
+
+        public String value() {
+            return reqString("value");
+        }
+
+    }
+
     //Constructors
     //============
 
@@ -51,7 +97,11 @@ public String description() {
     }
 
     public String meteredFeatureId() {
-        return reqString("metered_feature_id");
+        return optString("metered_feature_id");
+    }
+
+    public String currencyCode() {
+        return optString("currency_code");
     }
 
     public String subscriptionId() {
@@ -74,6 +124,14 @@ public Timestamp updatedAt() {
         return reqTimestamp("updated_at");
     }
 
+    public List<Alert.Threshold> threshold() {
+        return optList("threshold", Alert.Threshold.class);
+    }
+
+    public List<Alert.FilterCondition> filterConditions() {
+        return optList("filter_conditions", Alert.FilterCondition.class);
+    }
+
     // Operations
     //===========
 
@@ -136,7 +194,13 @@ public CreateRequest description(String description) {
 
 
         public CreateRequest meteredFeatureId(String meteredFeatureId) {
-            params.add("metered_feature_id", meteredFeatureId);
+            params.addOpt("metered_feature_id", meteredFeatureId);
+            return this;
+        }
+
+
+        public CreateRequest currencyCode(String currencyCode) {
+            params.addOpt("currency_code", currencyCode);
             return this;
         }
 
@@ -154,7 +218,7 @@ public CreateRequest meta(String meta) {
 
 
         public CreateRequest thresholdMode(com.chargebee.models.enums.Mode thresholdMode) {
-            params.add("threshold[mode]", thresholdMode);
+            params.addOpt("threshold[mode]", thresholdMode);
             return this;
         }