diff --git a/src/main/java/com/gocardless/resources/ScenarioSimulator.java b/src/main/java/com/gocardless/resources/ScenarioSimulator.java
index 81f200e0..23176c2f 100644
--- a/src/main/java/com/gocardless/resources/ScenarioSimulator.java
+++ b/src/main/java/com/gocardless/resources/ScenarioSimulator.java
@@ -81,9 +81,8 @@ private ScenarioSimulator() {
      * `pending_submission` state. Not compatible with Autogiro, BECS NZ, and PAD mandates, which do
      * not expire.</li>
      * <li>`mandate_transferred`: Transitions a mandate through to `transferred`, having been
-     * submitted to the banks, set up successfully and then moved to a new bank account due to the
-     * customer using the UK's Current Account Switching Service (CASS). It must start in the
-     * `pending_submission` state. Only compatible with Bacs mandates.</li>
+     * submitted to the banks, set up successfully and then moved to a new bank account due. It must
+     * start in the `pending_submission` state. Only compatible with Bacs and SEPA mandates.</li>
      * <li>`mandate_transferred_with_resubmission`: Transitions a mandate through `transferred` and
      * resubmits it to the banks, can be caused be the UK's Current Account Switching Service (CASS)
      * or when a customer contacts GoCardless to change their bank details. It must start in the
diff --git a/src/main/java/com/gocardless/services/BillingRequestTemplateService.java b/src/main/java/com/gocardless/services/BillingRequestTemplateService.java
index 53261738..5125d10c 100644
--- a/src/main/java/com/gocardless/services/BillingRequestTemplateService.java
+++ b/src/main/java/com/gocardless/services/BillingRequestTemplateService.java
@@ -57,7 +57,7 @@ public BillingRequestTemplateGetRequest get(String identity) {
     }
 
     /**
-      * 
+      *  
      */
     public BillingRequestTemplateCreateRequest create() {
         return new BillingRequestTemplateCreateRequest(httpClient);
diff --git a/src/main/java/com/gocardless/services/MandateImportEntryService.java b/src/main/java/com/gocardless/services/MandateImportEntryService.java
index cf79aa06..b5fed44f 100644
--- a/src/main/java/com/gocardless/services/MandateImportEntryService.java
+++ b/src/main/java/com/gocardless/services/MandateImportEntryService.java
@@ -473,6 +473,25 @@ public MandateImportEntryCreateRequest withMandate(Mandate mandate) {
             return this;
         }
 
+        /**
+         * This field is ACH specific, sometimes referred to as [SEC
+         * code](https://www.moderntreasury.com/learn/sec-codes).
+         * 
+         * This is the way that the payer gives authorisation to the merchant. web: Authorisation is
+         * Internet Initiated or via Mobile Entry (maps to SEC code: WEB) telephone: Authorisation
+         * is provided orally over telephone (maps to SEC code: TEL) paper: Authorisation is
+         * provided in writing and signed, or similarly authenticated (maps to SEC code: PPD)
+         * 
+         */
+        public MandateImportEntryCreateRequest withMandateAuthorisationSource(
+                Mandate.AuthorisationSource authorisationSource) {
+            if (mandate == null) {
+                mandate = new Mandate();
+            }
+            mandate.withAuthorisationSource(authorisationSource);
+            return this;
+        }
+
         /**
          * Key-value store of custom data. Up to 3 keys are permitted, with key names up to 50
          * characters and values up to 500 characters.
@@ -856,9 +875,26 @@ public Links withMandateImport(String mandateImport) {
         }
 
         public static class Mandate {
+            private AuthorisationSource authorisationSource;
             private Map<String, String> metadata;
             private String reference;
 
+            /**
+             * This field is ACH specific, sometimes referred to as [SEC
+             * code](https://www.moderntreasury.com/learn/sec-codes).
+             * 
+             * This is the way that the payer gives authorisation to the merchant. web:
+             * Authorisation is Internet Initiated or via Mobile Entry (maps to SEC code: WEB)
+             * telephone: Authorisation is provided orally over telephone (maps to SEC code: TEL)
+             * paper: Authorisation is provided in writing and signed, or similarly authenticated
+             * (maps to SEC code: PPD)
+             * 
+             */
+            public Mandate withAuthorisationSource(AuthorisationSource authorisationSource) {
+                this.authorisationSource = authorisationSource;
+                return this;
+            }
+
             /**
              * Key-value store of custom data. Up to 3 keys are permitted, with key names up to 50
              * characters and values up to 500 characters.
@@ -877,6 +913,19 @@ public Mandate withReference(String reference) {
                 this.reference = reference;
                 return this;
             }
+
+            public enum AuthorisationSource {
+                @SerializedName("web")
+                WEB, @SerializedName("telephone")
+                TELEPHONE, @SerializedName("paper")
+                PAPER, @SerializedName("unknown")
+                UNKNOWN;
+
+                @Override
+                public String toString() {
+                    return name().toLowerCase();
+                }
+            }
         }
     }
 
diff --git a/src/main/java/com/gocardless/services/OutboundPaymentService.java b/src/main/java/com/gocardless/services/OutboundPaymentService.java
index f62957cb..a756f2d9 100644
--- a/src/main/java/com/gocardless/services/OutboundPaymentService.java
+++ b/src/main/java/com/gocardless/services/OutboundPaymentService.java
@@ -37,7 +37,7 @@ public OutboundPaymentService(HttpClient httpClient) {
     }
 
     /**
-      * 
+      *  
      */
     public OutboundPaymentCreateRequest create() {
         return new OutboundPaymentCreateRequest(httpClient);