diff --git a/mintlify/openapi.yaml b/mintlify/openapi.yaml
index 0ae3a6da..0744dc17 100644
--- a/mintlify/openapi.yaml
+++ b/mintlify/openapi.yaml
@@ -20373,7 +20373,11 @@ components:
         - LIGHTNING_PAYMENT_FAILED
         - FUNDING_AMOUNT_MISMATCH
         - COUNTERPARTY_POST_TX_FAILED
-      description: Reason for failure of an outgoing transaction. This is used to provide more context on why a transaction failed. If the transaction is not in a failed state, this field is omitted.
+        - SCA_NOT_COMPLETED
+      description: |-
+        Reason for failure of an outgoing transaction. This is used to provide more context on why a transaction failed. If the transaction is not in a failed state, this field is omitted.
+
+        `SCA_NOT_COMPLETED` means the customer did not satisfy the Strong Customer Authentication challenge before it expired, so the transaction was never authorized and no funds were moved. Only occurs for customers in a region where SCA is required (e.g. the EU). Create a new quote to try again, and have the customer authorize it while the challenge is live.
     RailSelectionMode:
       type: string
       enum:
diff --git a/openapi.yaml b/openapi.yaml
index 0ae3a6da..0744dc17 100644
--- a/openapi.yaml
+++ b/openapi.yaml
@@ -20373,7 +20373,11 @@ components:
         - LIGHTNING_PAYMENT_FAILED
         - FUNDING_AMOUNT_MISMATCH
         - COUNTERPARTY_POST_TX_FAILED
-      description: Reason for failure of an outgoing transaction. This is used to provide more context on why a transaction failed. If the transaction is not in a failed state, this field is omitted.
+        - SCA_NOT_COMPLETED
+      description: |-
+        Reason for failure of an outgoing transaction. This is used to provide more context on why a transaction failed. If the transaction is not in a failed state, this field is omitted.
+
+        `SCA_NOT_COMPLETED` means the customer did not satisfy the Strong Customer Authentication challenge before it expired, so the transaction was never authorized and no funds were moved. Only occurs for customers in a region where SCA is required (e.g. the EU). Create a new quote to try again, and have the customer authorize it while the challenge is live.
     RailSelectionMode:
       type: string
       enum:
diff --git a/openapi/components/schemas/transactions/OutgoingTransactionFailureReason.yaml b/openapi/components/schemas/transactions/OutgoingTransactionFailureReason.yaml
index 8af526f7..42253161 100644
--- a/openapi/components/schemas/transactions/OutgoingTransactionFailureReason.yaml
+++ b/openapi/components/schemas/transactions/OutgoingTransactionFailureReason.yaml
@@ -5,7 +5,15 @@ enum:
   - LIGHTNING_PAYMENT_FAILED
   - FUNDING_AMOUNT_MISMATCH
   - COUNTERPARTY_POST_TX_FAILED
+  - SCA_NOT_COMPLETED
 description: >-
   Reason for failure of an outgoing transaction. This is used to provide more
   context on why a transaction failed. If the transaction is not in a failed
   state, this field is omitted.
+
+
+  `SCA_NOT_COMPLETED` means the customer did not satisfy the Strong Customer
+  Authentication challenge before it expired, so the transaction was never
+  authorized and no funds were moved. Only occurs for customers in a region
+  where SCA is required (e.g. the EU). Create a new quote to try again, and have
+  the customer authorize it while the challenge is live.