diff --git a/src/Constants.php b/src/Constants.php
index 7a9b8a2..798701f 100644
--- a/src/Constants.php
+++ b/src/Constants.php
@@ -2,7 +2,7 @@
 namespace Avalara;
 use GuzzleHttp\Client;
 
-define('AVATAX_SDK_VERSION', '24.6.3');
+define('AVATAX_SDK_VERSION', '24.8.0');
 
 /*****************************************************************************
  *                                                                           *
diff --git a/src/Methods.php b/src/Methods.php
index bf17ba2..cb0b099 100644
--- a/src/Methods.php
+++ b/src/Methods.php
@@ -5503,6 +5503,88 @@ public function getDcvById($domainControlVerificationId)    {
         return $this->restCall($path, 'GET', $guzzleParams, AVATAX_SDK_VERSION );
     }
 
+    /**
+     * Delete AFC event notifications.
+     *
+     * ### Security Policies
+     * 
+     * * This API depends on the following active services:*Required* (all): ECMPremiumComms, ECMProComms.
+     * Swagger Name: AvaTaxClient
+     * 
+     * @param boolean $isDlq Specify `true` to delete event notifications from the dead letter queue; otherwise, specify `false`.
+     * @param EventDeleteMessageModel $model Details of the event you want to delete.
+     * @return \stdClass
+     */
+    public function deleteAfcEventNotifications($isDlq, $model)    {
+        $path = "/api/v2/event-notifications/afc";
+        $guzzleParams = [
+            'query' => ['isDlq' => null === $isDlq ? null : json_encode($isDlq)],
+            'body' => json_encode($model)
+        ];
+        return $this->restCall($path, 'DELETE', $guzzleParams, AVATAX_SDK_VERSION );
+    }
+
+    /**
+     * Delete company event notifications
+     *
+     * ### Security Policies
+     * 
+     * * This API depends on the following active services:*Required* (all): ECMPro, ECMPremium.
+     * Swagger Name: AvaTaxClient
+     * 
+     * @param int $companyId The unique ID number of the company that recorded these event notifications.
+     * @param EventDeleteMessageModel $model Details of the event you want to delete.
+     * @return \stdClass
+     */
+    public function deleteEventNotifications($companyId, $model)    {
+        $path = "/api/v2/event-notifications/companies/{$companyId}";
+        $guzzleParams = [
+            'query' => [],
+            'body' => json_encode($model)
+        ];
+        return $this->restCall($path, 'DELETE', $guzzleParams, AVATAX_SDK_VERSION );
+    }
+
+    /**
+     * Retrieve company event notifications.
+     *
+     * ### Security Policies
+     * 
+     * * This API depends on the following active services:*Required* (all): ECMPro, ECMPremium.
+     * Swagger Name: AvaTaxClient
+     * 
+     * @param int $companyId The unique ID number of the company that recorded these event notifications.
+     * @return \stdClass
+     */
+    public function getEventNotifications($companyId)    {
+        $path = "/api/v2/event-notifications/companies/{$companyId}";
+        $guzzleParams = [
+            'query' => [],
+            'body' => null
+        ];
+        return $this->restCall($path, 'GET', $guzzleParams, AVATAX_SDK_VERSION );
+    }
+
+    /**
+     * Retrieve AFC event notifications
+     *
+     * ### Security Policies
+     * 
+     * * This API depends on the following active services:*Required* (all): ECMPremiumComms, ECMProComms.
+     * Swagger Name: AvaTaxClient
+     * 
+     * @param boolean $isDlq Specify `true` to retrieve event notifications from the dead letter queue; otherwise, specify `false`.
+     * @return \stdClass
+     */
+    public function listAfcEventNotifications($isDlq)    {
+        $path = "/api/v2/event-notifications/afc";
+        $guzzleParams = [
+            'query' => ['isDlq' => null === $isDlq ? null : json_encode($isDlq)],
+            'body' => null
+        ];
+        return $this->restCall($path, 'GET', $guzzleParams, AVATAX_SDK_VERSION );
+    }
+
     /**
      * Create a new eCommerce token.
      *
@@ -6696,6 +6778,35 @@ public function listItemsByCompany($companyId, $filter=null, $include=null, $top
         return $this->restCall($path, 'GET', $guzzleParams, AVATAX_SDK_VERSION );
     }
 
+    /**
+     * Retrieve the parameters by companyId and itemId.
+     *
+     * Returns the list of parameters based on the company's service types and the item code.
+     * Ignores nexus if a service type is configured in the 'IgnoreNexusForServiceTypes' configuration section.
+     * Ignores nexus for the AvaAlcohol service type.
+     * 
+     * ### Security Policies
+     * 
+     * * This API requires one of the following user roles: AccountAdmin, AccountUser, BatchServiceAdmin, CompanyAdmin, CompanyUser, CSPAdmin, CSPTester, SiteAdmin, SSTAdmin, SystemAdmin, TechnicalSupportAdmin, TechnicalSupportUser.
+     * Swagger Name: AvaTaxClient
+     * 
+     * @param int $companyId Company Identifier.
+     * @param int $itemId Item Identifier.
+     * @param string $filter A filter statement to identify specific records to retrieve. For more information on filtering, see [Filtering in REST](http://developer.avalara.com/avatax/filtering-in-rest/).<br />*Not filterable:* serviceTypes, regularExpression, attributeSubType, values
+     * @param int $top If nonzero, return no more than this number of results. Used with `$skip` to provide pagination for large datasets. Unless otherwise specified, the maximum number of records that can be returned from an API call is 1,000 records.
+     * @param int $skip If nonzero, skip this number of results before returning data. Used with `$top` to provide pagination for large datasets.
+     * @param string $orderBy A comma separated list of sort statements in the format `(fieldname) [ASC|DESC]`, for example `id ASC`.
+     * @return \stdClass
+     */
+    public function listRecommendedParameterByCompanyIdAndItemId($companyId, $itemId, $filter=null, $top=null, $skip=null, $orderBy=null)    {
+        $path = "/api/v2/definitions/companies/{$companyId}/items/{$itemId}/parameters";
+        $guzzleParams = [
+            'query' => ['$filter' => $filter, '$top' => $top, '$skip' => $skip, '$orderBy' => $orderBy],
+            'body' => null
+        ];
+        return $this->restCall($path, 'GET', $guzzleParams, AVATAX_SDK_VERSION );
+    }
+
     /**
      * Retrieve all items
      *
diff --git a/src/Models.php b/src/Models.php
index 1069a8c..1d86a77 100644
--- a/src/Models.php
+++ b/src/Models.php
@@ -1601,14 +1601,14 @@ class BatchModel
      * @var string The agent used to create this batch
      */
     public $batchAgent;
-    /**
-     * @var string Any optional flags provided for this batch
-     */
-    public $options;
     /**
      * @var int The unique ID number of this batch.
      */
     public $id;
+    /**
+     * @var string Any optional flags provided for this batch
+     */
+    public $options;
     /**
      * @var string The user-friendly readable name for this batch.
      */
@@ -3790,6 +3790,10 @@ class CreateTransactionBatchRequestModel
      * @var TransactionBatchItemModel[] The list of transactions contained in this batch.
      */
     public $transactions;
+    /**
+     * @var string Any optional flags provided for this batch
+     */
+    public $options;
 }
 /**
  * Represents a create transaction batch response model.
@@ -3801,6 +3805,10 @@ class CreateTransactionBatchResponseModel
      * @var int The unique ID number of this batch.
      */
     public $id;
+    /**
+     * @var string Any optional flags provided for this batch
+     */
+    public $options;
     /**
      * @var string The user-friendly readable name for this batch.
      */
@@ -3997,6 +4005,68 @@ class CreateTransactionModel
      */
     public $deliveryTerms;
 }
+/**
+ * Credit Transaction Detail Lines
+ * Swagger Name: AvaTaxClient
+ */
+class CreditTransactionDetailLines
+{
+    /**
+     * @var string ReportingDate
+     */
+    public $reportingDate;
+    /**
+     * @var string LineNo
+     */
+    public $lineNo;
+    /**
+     * @var float LineAmount
+     */
+    public $lineAmount;
+    /**
+     * @var float ExemptAmount
+     */
+    public $exemptAmount;
+    /**
+     * @var float TaxableAmount
+     */
+    public $taxableAmount;
+    /**
+     * @var float TaxAmount
+     */
+    public $taxAmount;
+}
+/**
+ * Credit Transaction Details
+ * Swagger Name: AvaTaxClient
+ */
+class CreditTransactionDetails
+{
+    /**
+     * @var string DocCode
+     */
+    public $docCode;
+    /**
+     * @var string DocDate
+     */
+    public $docDate;
+    /**
+     * @var float TotalExempt
+     */
+    public $totalExempt;
+    /**
+     * @var float TotalTaxable
+     */
+    public $totalTaxable;
+    /**
+     * @var float TotalTax
+     */
+    public $totalTax;
+    /**
+     * @var CreditTransactionDetailLines[] Lines
+     */
+    public $lines;
+}
 /**
  * Represents an ISO 4217 currency code used for designating the currency of a transaction.
  * Swagger Name: AvaTaxClient
@@ -5255,6 +5325,51 @@ class ErrorTransactionOutputModel
      */
     public $documentCode;
 }
+/**
+ * Model to delete message
+ * Swagger Name: AvaTaxClient
+ */
+class EventDeleteBatchMessageModel
+{
+    /**
+     * @var string The receipt handle associated with the message to delete.
+     */
+    public $receiptHandle;
+    /**
+     * @var string A system-assigned message ID
+     */
+    public $messageId;
+}
+/**
+ * Encloses the delete message command.
+ * Swagger Name: AvaTaxClient
+ */
+class EventDeleteMessageModel
+{
+    /**
+     * @var EventDeleteBatchMessageModel[] Command details for the delete message
+     */
+    public $eventDeleteBatchMessageCommands;
+}
+/**
+ * Encloses event message details
+ * Swagger Name: AvaTaxClient
+ */
+class EventMessageResponse
+{
+    /**
+     * @var string Message content
+     */
+    public $body;
+    /**
+     * @var string A system-assigned message ID
+     */
+    public $messageId;
+    /**
+     * @var string The receipt handle associated with the message to delete.
+     */
+    public $receiptHandle;
+}
 /**
  * An exemption reason defines why a certificate allows a customer to be exempt
  * for purposes of tax calculation. For a full list of defined exemption reasons,
@@ -5860,6 +5975,10 @@ class FilingCalendarModel
      * @var int Auto Lock Override Day
      */
     public $autoLockOverrideDay;
+    /**
+     * @var string The three-character currency code according to country. For example if country is 'US' then currency is 'USD'. Similarly, if country is 'CA' then currency is 'CAD', etc.
+     */
+    public $currency;
 }
 /**
  * FilingFrequency Model
@@ -6216,7 +6335,7 @@ class FilingReturnCreditModel
      */
     public $totalTax;
     /**
-     * @var WorksheetDocument[] The excluded carry over credit documents
+     * @var CreditTransactionDetails[] The excluded carry over credit documents
      */
     public $transactionDetails;
 }
@@ -6450,6 +6569,14 @@ class FilingReturnModel
      * @var FilingReturnCreditModel 
      */
     public $appliedCarryOverCredits;
+    /**
+     * @var string The three-character liability currency code.
+     */
+    public $liabilityCurrencyCode;
+    /**
+     * @var string The three-character filing calendar currency code for this return. For example if country is 'US' then currency is 'USD'. Similarly, if country is 'CA' then currency is 'CAD', etc.
+     */
+    public $filingCalendarCurrencyCode;
     /**
      * @var string The date when this record was created.
      */
@@ -7923,11 +8050,11 @@ class ItemCatalogueInputModel
      */
     public $itemType;
     /**
-     * @var string The universal product code of the item.
+     * @var string The universal product code of the item.     Deprecated - As of 6/25/2024, this field is deprecated. Instead of using this field, you can pass this value as a parameter. The parameter name is UPC.
      */
     public $upc;
     /**
-     * @var string A summary for selection of the tax code.
+     * @var string Long Summary for Item     Deprecated - As of 6/25/2024, this field is deprecated. Instead of using this field, you can pass this value as a parameter. The parameter name is Summary.
      */
     public $summary;
     /**
@@ -7943,7 +8070,7 @@ class ItemCatalogueInputModel
      */
     public $source;
     /**
-     * @var string The Id of this item at the source
+     * @var string The unique identifier of this item at the source
      */
     public $sourceEntityId;
     /**
@@ -7951,7 +8078,7 @@ class ItemCatalogueInputModel
      */
     public $properties;
     /**
-     * @var ClassificationModel[] Classifications Attached to the Product
+     * @var ClassificationModel[] Classifications Attached to the Product  Please note: `taxCode` (ProductCode for SystemCode `AVATAXCODE`) is being removed from `classifications`. You can still find it in the `taxCode` field.
      */
     public $classifications;
     /**
@@ -7989,7 +8116,7 @@ class ItemCatalogueResultModel
      */
     public $itemCode;
     /**
-     * @var string The Id of this item at the source
+     * @var string The unique identifier of this item at the source
      */
     public $sourceEntityId;
     /**
@@ -8106,7 +8233,7 @@ class ItemModel
      */
     public $source;
     /**
-     * @var string The Id of this item at the source
+     * @var string The unique identifier of this item at the source
      */
     public $sourceEntityId;
     /**
@@ -8114,15 +8241,15 @@ class ItemModel
      */
     public $itemType;
     /**
-     * @var string Universal unique code for item
+     * @var string Universal unique code for item     Deprecated - As of 6/25/2024, this field is deprecated. Instead of using this field, you can pass this value as a parameter. `The parameter name is UPC`.
      */
     public $upc;
     /**
-     * @var string Long Summary for Item
+     * @var string Long Summary for Item     Deprecated - As of 6/25/2024, this field is deprecated. Instead of using this field, you can pass this value as a parameter. `The parameter name is Summary`.
      */
     public $summary;
     /**
-     * @var ClassificationModel[] List of classifications that belong to this item.  A single classification consists of a productCode and a systemCode for a particular item.
+     * @var ClassificationModel[] List of classifications that belong to this item.  A single classification consists of a productCode and a systemCode for a particular item.     Please note: `taxCode` (ProductCode for SystemCode `AVATAXCODE`) is being removed from `classifications`. You can still find it in the `taxCode` field.
      */
     public $classifications;
     /**
@@ -9472,41 +9599,6 @@ class MarketplaceModel
      */
     public $marketplace;
 }
-/**
- * 
- * Swagger Name: AvaTaxClient
- */
-class Message
-{
-    /**
-     * @var string 
-     */
-    public $details;
-    /**
-     * @var string 
-     */
-    public $helpLink;
-    /**
-     * @var string 
-     */
-    public $name;
-    /**
-     * @var string 
-     */
-    public $refersTo;
-    /**
-     * @var string 
-     */
-    public $severity;
-    /**
-     * @var string 
-     */
-    public $source;
-    /**
-     * @var string 
-     */
-    public $summary;
-}
 /**
  * A company and account
  * Swagger Name: AvaTaxClient
@@ -9869,6 +9961,14 @@ class MultiTaxFilingReturnModel
      * @var string The FilingTaskType for this return.
      */
     public $type;
+    /**
+     * @var string The three-character liability currency code.
+     */
+    public $liabilityCurrencyCode;
+    /**
+     * @var string The three-character filing calendar currency code for this return. For example if country is 'US' then currency is 'USD'. Similarly, if country is 'CA' then currency is 'CAD', etc.
+     */
+    public $filingCalendarCurrencyCode;
     /**
      * @var FilingsTaxSummaryModel 
      */
@@ -15090,92 +15190,6 @@ class VoidTransactionModel
      */
     public $code;
 }
-/**
- * 
- * Swagger Name: AvaTaxClient
- */
-class WorksheetDocument
-{
-    /**
-     * @var string 
-     */
-    public $docCode;
-    /**
-     * @var string 
-     */
-    public $docDate;
-    /**
-     * @var float 
-     */
-    public $totalExempt;
-    /**
-     * @var float 
-     */
-    public $totalTaxable;
-    /**
-     * @var float 
-     */
-    public $totalTax;
-    /**
-     * @var WorksheetDocumentLine[] 
-     */
-    public $lines;
-    /**
-     * @var Message[] 
-     */
-    public $messages;
-    /**
-     * @var string 
-     */
-    public $resultCode;
-    /**
-     * @var string 
-     */
-    public $transactionId;
-}
-/**
- * 
- * Swagger Name: AvaTaxClient
- */
-class WorksheetDocumentLine
-{
-    /**
-     * @var string 
-     */
-    public $reportingDate;
-    /**
-     * @var string 
-     */
-    public $lineNo;
-    /**
-     * @var float 
-     */
-    public $lineAmount;
-    /**
-     * @var float 
-     */
-    public $exemptAmount;
-    /**
-     * @var float 
-     */
-    public $taxableAmount;
-    /**
-     * @var float 
-     */
-    public $taxAmount;
-    /**
-     * @var Message[] 
-     */
-    public $messages;
-    /**
-     * @var string 
-     */
-    public $resultCode;
-    /**
-     * @var string 
-     */
-    public $transactionId;
-}
 /**
  * Represents a verification request using Skyscraper for a company
  * Swagger Name: AvaTaxClient